Chemistry 121 Chapter 4 Part 1

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  • 1/18 Questions

    A Weak Electrolyte ____________________

    • Does not completely dissociate
    • Has 100% dissociation
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About This Quiz

Explore key concepts in Chemistry 121 with a focus on solutions. This quiz covers the nature of solutions, solutes, solvents, and electrolytes, assessing understanding of their roles and behaviors in chemical reactions. Ideal for students enhancing their chemistry knowledge.

Chemistry 121 Chapter 4 Part 1 - Quiz

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  • 2. 

    If something dissolves totally it is _______________

    • Insoluble

    • Soluble

    • Sparing soluble

    Correct Answer
    A. Soluble
    Explanation
    If something dissolves totally, it means that it is able to completely mix and dissolve in a liquid. This indicates that the substance is soluble, as it has the ability to dissolve and form a homogeneous solution with the solvent.

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  • 3. 

    If something does not dissolve it is __________________________

    • Sparing soluble

    • Insoluble

    • Soluble

    Correct Answer
    A. Insoluble
    Explanation
    If something does not dissolve, it means that it cannot be dissolved or mixed into a liquid. Therefore, the correct answer is "insoluble."

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  • 4. 

    Compounds containing Na are 

    • Soluble

    • Insoluble

    Correct Answer
    A. Soluble
    Explanation
    Compounds containing Na (sodium) are soluble. This is because sodium is an alkali metal and its compounds tend to be highly soluble in water. Sodium ions (Na+) have a strong affinity for water molecules due to their positive charge, and they can easily dissociate from their compounds and form hydrated ions in solution. Therefore, compounds such as sodium chloride (NaCl) and sodium hydroxide (NaOH) readily dissolve in water, making them soluble.

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  • 5. 

    ___________ is the universal solvent.

    • Hydrogen

    • Water

    • Calicum

    Correct Answer
    A. Water
    Explanation
    Water is considered the universal solvent because it has the ability to dissolve a wide range of substances. This is due to its unique molecular structure, with one oxygen atom bonded to two hydrogen atoms. The oxygen atom has a slight negative charge, while the hydrogen atoms have a slight positive charge, creating a polar molecule. This polarity allows water molecules to attract and surround other charged or polar molecules, breaking them apart and forming a solution. As a result, water can dissolve many substances, making it an essential solvent for various biological and chemical processes.

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  • 6. 

    Compounds containing ClO3- (chlorate) are

    • Soluable

    • Insoluble

    Correct Answer
    A. Soluable
    Explanation
    Chlorates (ClO3-) are generally soluble in water. This is because chlorates are highly polar molecules with a negative charge on the oxygen atom and a positive charge on the chlorine atom. The strong electrostatic attraction between the polar water molecules and the charged ions in the chlorate compound allows for the compound to dissolve easily in water. Therefore, compounds containing ClO3- ions are soluble in water.

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  • 7. 

    Compounds containing K are ______________

    • Soluble

    • Insoluble

    Correct Answer
    A. Soluble
    Explanation
    Compounds containing K are soluble because potassium (K) is an alkali metal and tends to form ionic compounds with other elements. These ionic compounds, such as potassium chloride (KCl) or potassium nitrate (KNO3), dissociate into ions when dissolved in water, resulting in the formation of a solution. The strong electrostatic attraction between the positive potassium ions (K+) and the negative ions allows for easy dissolution and solubility in water.

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  • 8. 

    Compounds containing NO3- (Nitrate) are

    • Soluble

    • Insoluable

    Correct Answer
    A. Soluble
    Explanation
    Compounds containing NO3- (Nitrate) are soluble because nitrates are generally soluble in water. This is due to the strong attraction between the nitrate ion and the polar water molecules, which allows for the dissociation of the compound into its constituent ions. Therefore, when a compound contains the nitrate ion, it will typically dissolve and form a homogeneous solution with water.

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  • 9. 

    A Strong Electrolyte _______________________

    • Does not completely dissociate

    • Has 100% dissociation

    Correct Answer
    A. Has 100% dissociation
    Explanation
    A strong electrolyte is a substance that completely dissociates into ions when dissolved in water. This means that all of the molecules of the electrolyte break apart into their constituent ions, resulting in a high concentration of ions in the solution. Therefore, the correct answer is "has 100% dissociation."

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  • 10. 

    Compounds containing Li are ______________

    • Soluble

    • Insoluble

    Correct Answer
    A. Soluble
    Explanation
    Lithium (Li) compounds are soluble in water. This is because lithium is an alkali metal with a low ionization energy, meaning it readily loses its outermost electron to form a positively charged ion (Li+). These ions then interact with the polar water molecules, which are able to surround and stabilize the ions through ion-dipole interactions. This allows lithium compounds to dissolve and become soluble in water.

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  • 11. 

    Compounds containing Cs are ___________________

    • Insoluble

    • Soluble

    Correct Answer
    A. Soluble
    Explanation
    Compounds containing Cs are soluble. This is because Cs (cesium) is an alkali metal and alkali metals generally form soluble compounds. They have low ionization energies and low electronegativities, which means they readily lose their outermost electron to form positively charged ions. These ions then easily dissolve in water or other polar solvents, resulting in the compound being soluble.

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  • 12. 

    Compounds containing NH4 are __________________

    • Insoluble

    • Soluble

    Correct Answer
    A. Soluble
    Explanation
    Compounds containing NH4, also known as ammonium compounds, are soluble. This is because ammonium compounds typically form ionic bonds with other ions in solution, allowing them to dissociate and dissolve easily. The NH4+ ion has a positive charge, making it attracted to the negative ions in the solvent, resulting in solubility.

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  • 13. 

    The _____________ is the smaller portion of the whole

    • Solute

    • Solvent

    • Solution

    Correct Answer
    A. Solute
    Explanation
    The solute is the smaller portion of the whole in a solution. In a solution, the solute is the substance that is being dissolved, while the solvent is the substance that does the dissolving. The solute is typically present in a smaller amount compared to the solvent. For example, in a saltwater solution, salt is the solute and water is the solvent. The solute particles are dispersed and evenly distributed throughout the solvent.

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  • 14. 

    If something dissolves a little it is _______________

    • Soluble

    • Insoluble

    • Sparing soluble

    Correct Answer
    A. Sparing soluble
    Explanation
    If something dissolves a little, it means that it is only partially soluble. In other words, it has the ability to dissolve to some extent, but not completely. Therefore, the term "sparing soluble" accurately describes this situation.

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  • 15. 

    Compounds containing C2H3O2- (acetate) are _________________

    • Insoluble

    • Soluble

    Correct Answer
    A. Soluble
    Explanation
    Compounds containing C2H3O2- (acetate) are soluble. This is because acetate is a small, negatively charged ion that can easily dissolve in water. It forms strong ion-dipole interactions with the water molecules, allowing the compound to dissociate and become solvated. As a result, acetate compounds are able to dissolve and form a homogeneous solution with water.

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  • 16. 

    A homogeneous mixture of two or more substances.

    • Substance

    • Solvent

    • Solution

    Correct Answer
    A. Solution
    Explanation
    A solution is a homogeneous mixture of two or more substances. In a solution, the substances are evenly distributed and cannot be easily separated. The substance that is present in a smaller amount and is dissolved in the larger amount is called the solute, while the substance that dissolves the solute is called the solvent. Therefore, a solution is the correct answer as it accurately describes a homogeneous mixture of substances.

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  • 17. 

    Compounds containing Rb are ___________________

    • Insoluble

    • Soluble

    Correct Answer
    A. Soluble
    Explanation
    Compounds containing Rb are soluble. This is because Rb (rubidium) is an alkali metal, which tend to form soluble compounds. Alkali metals have low ionization energies and readily lose their outermost electron to form positive ions. These ions then readily dissolve in water or other polar solvents, making compounds containing Rb soluble.

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  • 18. 

    The ____________ is the larger portion of the whole

    • Solute

    • Solution

    • Solvent

    Correct Answer
    A. Solvent
    Explanation
    The solvent is the larger portion of the whole in a solution. A solution is a homogeneous mixture of two or more substances, where the solvent is the substance that dissolves the solute. The solute is the substance that is being dissolved. In a solution, the solvent is present in a larger quantity compared to the solute. It is responsible for dissolving the solute and creating a uniform mixture.

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  • Jun 05, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 17, 2009
    Quiz Created by
    Roadman19771
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