Aqueous Reactions And Solution Stoichiometry Test Prep.
I made this to study from Mr. Guzman's Chem test! Whoop Whoop
Questions and Answers
- 1.
A solvent is present is _______ abundance
- A.
Average
- B.
Lowest
- C.
Greatest
Correct Answer
C. GreatestExplanation
The correct answer is "Greatest" because when a solvent is present in greatest abundance, it means that there is a larger amount of the solvent compared to any other substance in the mixture. This suggests that the solvent is the dominant component and has the highest concentration in the solution.Rate this question:
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- 2.
What are Electrolytes?
- A.
Substances that associate ions when poured/placed in water.
- B.
Substances that dissociate into ions when dissolved in water.
- C.
Substances that become strong acids, or strong bases when dissolved in water.
Correct Answer
B. Substances that dissociate into ions when dissolved in water.Explanation
Electrolytes are substances that dissociate into ions when dissolved in water. When an electrolyte is placed in water, the positive and negative ions separate and become surrounded by water molecules. This process is known as dissociation, and it allows electrolytes to conduct electricity in water. Examples of electrolytes include salts, acids, and bases.Rate this question:
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- 3.
Non-electrolytes ...
- A.
Remain unused at the end of the reaction
- B.
Are Weak Acids and Weak Bases
- C.
Are Usually a molecular compounds
- D.
Can dissolve in water, but no ions formed
- E.
Create a Salt
- F.
Causes the solution to indicate the presence of a base or acid.
Correct Answer(s)
C. Are Usually a molecular compounds
D. Can dissolve in water, but no ions formedExplanation
Non-electrolytes are usually molecular compounds that can dissolve in water but do not form ions. This means that when non-electrolytes dissolve in water, they do not break apart into charged particles like ions. Instead, they remain as intact molecules in the solution. This is in contrast to electrolytes, which do form ions when dissolved in water. Therefore, the correct answer is that non-electrolytes are usually molecular compounds that can dissolve in water, but no ions are formed.Rate this question:
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- 4.
A Strong Electrolyte dissolves ____ when dissolved in water while a Weak electrolyte ___ dissolves.
- A.
Half, Completely
- B.
Partially,Completely
- C.
Completely, Partially
- D.
Partially, Half
Correct Answer
C. Completely, PartiallyExplanation
A strong electrolyte completely dissociates into ions when dissolved in water, meaning that all of its molecules break apart into ions. On the other hand, a weak electrolyte only partially dissociates into ions when dissolved in water, meaning that only a fraction of its molecules break apart into ions. Therefore, the correct answer is "Completely, Partially."Rate this question:
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- 5.
Which are the 7 Strong Acids?
- A.
HNa2
- B.
HCl
- C.
PClO2
- D.
HBr
- E.
HI
- F.
OH2
- G.
HNO4
- H.
HClO3
- I.
NaCl
- J.
HFO
- K.
HClO4
- L.
HNO3
- M.
Mg(OH)2
- N.
H2SO4
Correct Answer(s)
B. HCl
D. HBr
E. HI
H. HClO3
K. HClO4
L. HNO3
N. H2SO4Explanation
The 7 strong acids are HCl, HBr, HI, HClO3, HClO4, HNO3, and H2SO4. These acids completely dissociate in water, releasing a high concentration of hydrogen ions (H+). They are considered strong because they have a high degree of ionization and are therefore highly reactive.Rate this question:
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- 6.
Exceptions of soluble ionic compounds:NO3- : NoneC2H3O2- : Ag+
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The given answer is false because it states that C2H3O2- does not form any exceptions with soluble ionic compounds. However, C2H3O2- does form an exception with Ag+. When C2H3O2- combines with Ag+, it forms a slightly soluble compound called silver acetate (AgC2H3O2). Therefore, the statement in the answer is incorrect.Rate this question:
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- 7.
Which three Soluble ionic compounds have the same exceptions?
- A.
NO3-, C2H3O2-, Ag+
- B.
Cl-, Br-, I-
- C.
SO4^2-, I-, S2-
- D.
OH, PO4^3-, CO3^2-
Correct Answer
B. Cl-, Br-, I-Explanation
The three soluble ionic compounds that have the same exceptions are Cl-, Br-, and I-. These compounds are exceptions to the solubility rules because they form soluble compounds with most cations, except for Ag+. This means that while most other compounds with these anions would be insoluble, these three can dissolve in water and form soluble compounds.Rate this question:
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- 8.
What sign represents "soluble"
- A.
Aq
- B.
Liq.
- C.
D
Correct Answer
A. AqExplanation
The sign "Aq" represents "aqueous" and is used to indicate that a substance is soluble in water. This means that the substance can dissolve in water to form a homogeneous solution.Rate this question:
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- 9.
Which Ionic compound is soluble?Sodium Carbonate (Na2CO3)Lead (II) sulfatePbSO4
- A.
Sodium Carbonate (Na2CO3)
- B.
Lead (II) sulfate
- C.
PbSO4
Correct Answer
A. Sodium Carbonate (Na2CO3)Explanation
Sodium carbonate (Na2CO3) is soluble because it is a salt of a strong base (NaOH) and a weak acid (H2CO3). When dissolved in water, the sodium carbonate dissociates into sodium ions (Na+) and carbonate ions (CO3^2-). These ions are stabilized by hydration, which allows the compound to dissolve and form a homogeneous solution. On the other hand, lead (II) sulfate (PbSO4) is insoluble because it is a salt of a weak base (Pb(OH)2) and a strong acid (H2SO4). The sulfate ions (SO4^2-) are highly polar and can form strong ionic bonds with the lead ions (Pb^2+), making it difficult for the compound to dissolve in water.Rate this question:
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- 10.
What is formed when one mixes insoluble ions?
- A.
A double exchange reaction
- B.
A metathesis reaction
- C.
A precipitate
- D.
An acid
Correct Answer
C. A precipitateExplanation
When insoluble ions are mixed, they can form a precipitate. A precipitate is a solid that forms when two solutions react and one of the products is insoluble in water. In this case, the insoluble ions combine to form a solid that separates from the solution. This process is known as precipitation and is commonly observed in chemical reactions involving ionic compounds.Rate this question:
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- 11.
What is another word for "Double Exchange Reaction"?
- A.
Precipitation Reaction
- B.
Single Replacement Reaction
- C.
Net Ionic Equation
- D.
Metathesis Reaction
Correct Answer
D. Metathesis ReactionExplanation
Metathesis reaction is another term for "Double Exchange Reaction". It involves the exchange of ions between two compounds, resulting in the formation of new compounds. This type of reaction is characterized by the swapping of positive and negative ions, leading to the formation of a precipitate or a gas. Therefore, "Metathesis Reaction" is the correct answer as it accurately describes the process of double exchange reactions.Rate this question:
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- 12.
When does a Double Exchange Reaction usually occur?
- A.
When you react a Base with an Acid
- B.
When you mix two precipitates together
- C.
When you place electrolytes in a beaker of water
Correct Answer
A. When you react a Base with an AcidExplanation
A double exchange reaction usually occurs when a base reacts with an acid. In this type of reaction, the positive ions from the base combine with the negative ions from the acid to form a new compound, while the remaining positive and negative ions form another compound. This type of reaction is also known as a metathesis reaction. It is characterized by the exchange of ions between two compounds, resulting in the formation of new compounds.Rate this question:
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- 13.
What does an Ionic Equation do?
- A.
Takes out all of the insoluble compounds from the equation leaving you with the soluble ones.
- B.
Separates each soluble compound into its individual forms more accurately showing each ions species.
- C.
It cancels out the ions that are identical on both the reactant and product sides.
Correct Answer
B. Separates each soluble compound into its individual forms more accurately showing each ions species.Explanation
An ionic equation separates each soluble compound into its individual forms, providing a more accurate representation of each ion species involved in the reaction. This allows for a clearer understanding of the specific ions that are participating in the reaction.Rate this question:
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- 14.
A Net Ionic Equation crosses out what doesn't change from the left side to the right side of the equation.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
A net ionic equation is a chemical equation that only includes the species that are directly involved in the reaction and excludes spectator ions. Spectator ions are ions that do not participate in the reaction and remain unchanged on both sides of the equation. Therefore, a net ionic equation "crosses out" these spectator ions, focusing only on the species that undergo a chemical change. This statement accurately describes the purpose and nature of a net ionic equation, making the answer true.Rate this question:
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- 15.
What is crossed out in a Net Ionic Equation
- A.
The Precipitate(s)
- B.
The Spectator Ion(s)
- C.
The Soluble Ion(s)
Correct Answer
B. The Spectator Ion(s)Explanation
In a net ionic equation, the spectator ions are crossed out. Spectator ions are the ions that do not participate in the chemical reaction and remain unchanged throughout the reaction. They are present on both sides of the equation and do not contribute to the formation of the products or the consumption of the reactants. Therefore, they are not included in the net ionic equation, which only focuses on the species that are directly involved in the reaction.Rate this question:
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- 16.
Acids:
- A.
There are only 7 strong acids
- B.
Increase the concentration of H+ when dissolved in water
- C.
Decrease the concentration of H+ when dissolved in water
- D.
Are Proton-Acceptors
- E.
Are Proton-Donors
- F.
There are only 9 Strong Acids
Correct Answer(s)
A. There are only 7 strong acids
B. Increase the concentration of H+ when dissolved in water
E. Are Proton-DonorsExplanation
Acids are substances that can increase the concentration of H+ ions when dissolved in water. They are considered as proton-donors because they donate H+ ions to the solution. There are only 7 strong acids, which are known for their ability to completely dissociate in water and release a high concentration of H+ ions. These strong acids include hydrochloric acid (HCl), sulfuric acid (H2SO4), and nitric acid (HNO3), among others. Therefore, the correct answer is that there are only 7 strong acids, they increase the concentration of H+ when dissolved in water, and they are proton-donors.Rate this question:
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- 17.
Bases:
- A.
All elements on column 1 along with Cl, Br, and I
- B.
Increase the concentration of OH- when dissolved in water
- C.
Decrease the concentration of H+ when dissolved in water
- D.
Are Proton-Acceptors
- E.
Are Proton-Donors
- F.
The strong bases are all alkali metals, Calcium, Strontium, and Barium
Correct Answer(s)
B. Increase the concentration of OH- when dissolved in water
D. Are Proton-Acceptors
F. The strong bases are all alkali metals, Calcium, Strontium, and BariumExplanation
The given answer combines multiple statements from the bases provided. It states that strong bases increase the concentration of OH- when dissolved in water, which is true according to the information given. It also states that strong bases are proton-acceptors, which is also true as strong bases are capable of accepting protons (H+ ions). Additionally, the answer mentions that the strong bases listed are alkali metals, Calcium, Strontium, and Barium, which is also accurate based on the information provided.Rate this question:
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- 18.
What are the products of an Acid-Base reaction?
- A.
Spectator Ions
- B.
Salt and a Precipitate
- C.
Salt and Water
Correct Answer
C. Salt and WaterExplanation
In an acid-base reaction, the products formed are a salt and water. This is because when an acid reacts with a base, they neutralize each other, resulting in the formation of a salt and water. The salt is formed by the combination of the positive ion from the base and the negative ion from the acid. Water is also produced as a byproduct of the reaction. Therefore, the correct answer is "Salt and Water".Rate this question:
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- 19.
A acid-base solution that produces a salt and water is also known as a ___________________
Correct Answer
neutralization reaction
double replacement reactionExplanation
A neutralization reaction is a type of chemical reaction in which an acid and a base react to form a salt and water. This reaction occurs when the hydrogen ions from the acid combine with the hydroxide ions from the base to form water, while the remaining ions combine to form a salt. The term "double replacement reaction" is also applicable in this context, as it refers to a reaction in which the positive and negative ions of two compounds switch places to form two new compounds. Both terms accurately describe the process of a acid-base solution producing a salt and water.Rate this question:
- 20.
When does an Oxidation-Reduction Reaction Occur?
- A.
Single replacement reaction
- B.
Double replacement reaction
- C.
When spectator ions are formed
Correct Answer
A. Single replacement reactionExplanation
An oxidation-reduction reaction occurs when a single element replaces another element in a compound. In this type of reaction, the element that is being replaced is oxidized (loses electrons) while the element that is doing the replacing is reduced (gains electrons). This type of reaction is also known as a redox reaction.Rate this question:
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- 21.
What 2 things react in a single replacement reaction?
- A.
A salt and water
- B.
A strong acid, and a strong base
- C.
An element, and an ion
Correct Answer
C. An element, and an ionExplanation
In a single replacement reaction, one element replaces another element in a compound. This reaction occurs when a more reactive element displaces a less reactive element from its compound. The element that is being replaced is called an ion, as it carries a positive or negative charge. The element that is doing the replacing is called an element, as it is a pure substance made up of only one type of atom. Therefore, the correct answer is "an element, and an ion."Rate this question:
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- 22.
When do you use the activity Series?
- A.
To determine if the reaction can take place in a Double Replacement Reaction
- B.
To determine if the reaction can take place in a Single Replacement Reaction
- C.
To determine if the reaction can take place in an Acid Base Reaction
Correct Answer
B. To determine if the reaction can take place in a Single Replacement ReactionExplanation
The activity series is used to determine if a reaction can take place in a single replacement reaction. In a single replacement reaction, one element replaces another element in a compound. The activity series lists elements in order of their reactivity, with the most reactive elements at the top and the least reactive elements at the bottom. If an element is higher in the activity series than another element in a compound, it can replace that element in the compound and a reaction can occur. Therefore, the activity series is used to determine if a reaction can take place in a single replacement reaction by comparing the reactivity of elements.Rate this question:
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- 23.
What is Mr. Guzman's molarity Equation?
- A.
M = (Moma) x (L of Sol) / L of Solution = Mass Moles/ L solution of (g)
- B.
M = moles solute / L of solution = Mass (g) Solution / ((Moma of Solute)x(L of Sol))
- C.
M = L of Solution / Mass (g) of Solution = Moles Solute / (Moma of Solution)x(L of Sol)
Correct Answer
B. M = moles solute / L of solution = Mass (g) Solution / ((Moma of Solute)x(L of Sol)) -
- 24.
When is this equation used?Mi x Vi = Mf x Vf
- A.
To determine Dilution
- B.
To determine an Acid
- C.
To determine an Indicator
Correct Answer
A. To determine DilutionExplanation
This equation, Mi x Vi = Mf x Vf, is used to determine dilution. It relates the initial concentration (Mi) and volume (Vi) of a solution to the final concentration (Mf) and volume (Vf) after dilution. By rearranging the equation, one can calculate any of the variables involved in the dilution process.Rate this question:
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- 25.
When taking the test, if you run into a Dilution problem, the variables are most likely not going to be in order of Mi x Vi = Mf x Vf
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The explanation for the correct answer is that in a dilution problem, the variables are typically in the order of Mi x Vi = Mf x Vf. This formula represents the relationship between the initial concentration (Mi) and volume (Vi) of a solution, and the final concentration (Mf) and volume (Vf) after dilution. Therefore, the statement that the variables are not likely to be in this order is false.Rate this question:
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