10-item Test On Naming Of Compounds

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Mcabana

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Quizzes Created: 5 | Total Attempts: 16,857

Questions: 10 | Attempts: 4,164 | Updated: Mar 21, 2023

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This test will measure how well you understood the rules used in naming compounds. You have 5 minutes to name the compounds given. Tick the letter that corresponds to your answer.

Questions and Answers

1.

H2SO4
- A.
  
  Sulfurous acid
- B.
  
  Hyposulfurous acid
- C.
  
  Sulfuric acid
- D.
  
  Persulfuric acid
Correct Answer
C. Sulfuric acid

Explanation
The correct answer is sulfuric acid because H2SO4 is the chemical formula for sulfuric acid. Sulfuric acid is a strong acid commonly used in various industrial processes, such as in the production of fertilizers, dyes, and detergents. It is also used in laboratories and can be highly corrosive and dangerous if not handled properly.

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2.

C2H4
- A.
  
  Carbon hydride
- B.
  
  Tetracarbon dihydride
- C.
  
  Dicarbon tetrahydride
- D.
  
  Hydrogen carbide
Correct Answer
C. Dicarbon tetrahydride

Explanation
The correct answer is dicarbon tetrahydride because the molecular formula C2H4 indicates that there are two carbon atoms and four hydrogen atoms in the compound. The prefix "di" indicates two carbon atoms, and the prefix "tetra" indicates four hydrogen atoms. Therefore, dicarbon tetrahydride is the appropriate name for this compound.

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3.

HI
- A.
  
  Iodic acid
- B.
  
  Hydroiodous acid
- C.
  
  Hydroiodic acid
- D.
  
  Hypoiodous acid
Correct Answer
C. Hydroiodic acid

Explanation
Hydroiodic acid is the correct answer because it is formed when hydrogen iodide (HI) dissolves in water. It is a strong acid that is commonly used in various chemical reactions and as a reagent in organic synthesis. The other options, periodic acid, hydroiodous acid, and hypoiodous acid, are different compounds that have different chemical properties and structures.

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4.

Fe2S3
- A.
  
  Diferric trisulfide
- B.
  
  Ferric sulfide
- C.
  
  Ferrous sulfide
- D.
  
  Iron (II) sulfide
Correct Answer
B. Ferric sulfide

Explanation
The correct answer is ferric sulfide because the formula Fe2S3 indicates that there are two iron (Fe) atoms and three sulfur (S) atoms in the compound. The prefix "ferric" refers to iron in its +3 oxidation state, which matches with the formula. Therefore, the compound is correctly named ferric sulfide.

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5.

K4SiO5
- A.
  
  Potassium persilicate
- B.
  
  Potassium silicate
- C.
  
  Potassium silicite
- D.
  
  Potassium hyposilicite
Correct Answer
A. Potassium persilicate

Explanation
The correct answer is potassium persilicate because the chemical formula K4SiO5 indicates that there are four potassium atoms (K) and one silicate ion (SiO5) present in the compound. The prefix "per-" in persilicate indicates that the silicate ion has a higher oxidation state compared to normal silicate ions. Therefore, the compound is named potassium persilicate.

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6.

Pb(OH)4
- A.
  
  Lead (II) hydroxide
- B.
  
  Lead hydroxide
- C.
  
  Plumbous hydroxide
- D.
  
  Lead (IV) hydroxide
Correct Answer
D. Lead (IV) hydroxide

Explanation
The correct answer is "lead (IV) hydroxide" because the chemical formula "Pb(OH)4" indicates that there are four hydroxide ions (OH-) combined with one lead ion (Pb4+). Since lead has a +4 charge in this compound, it is referred to as lead (IV) hydroxide.

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7.

CaC2O4
- A.
  
  Calcium hypooxalite
- B.
  
  Calcium oxalite
- C.
  
  Calcium oxalate
- D.
  
  Calcium peroxalate
Correct Answer
C. Calcium oxalate

Explanation
Calcium oxalate is the correct answer because the chemical formula CaC2O4 corresponds to calcium oxalate. Calcium oxalate is a compound made up of calcium ions (Ca2+) and oxalate ions (C2O4^2-). It is a white crystalline substance that is commonly found in plants, as well as in the human body where it can form kidney stones.

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8.

HIO4
- A.
  
  Periodic acid
- B.
  
  Iodic acid
- C.
  
  Iodous acid
- D.
  
  Hypoiodous acid
Correct Answer
A. Periodic acid

Explanation
Periodic acid is a compound with the chemical formula HIO4. It is a strong oxidizing agent and is commonly used in organic chemistry reactions. The other options, iodic acid, iodous acid, and hypoiodous acid, do not have the same chemical formula as periodic acid. Therefore, periodic acid is the correct answer.

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9.

AlPO3
- A.
  
  Aluminum hypophosphite
- B.
  
  Aluminum phosphite
- C.
  
  Aluminum phosphate
- D.
  
  Aluminum perphosphate
Correct Answer
B. Aluminum phosphite

Explanation
AlPO3 is the chemical formula for aluminum phosphite. This compound consists of one aluminum atom bonded to three oxygen atoms and one phosphorus atom. The prefix "phosph-" in the name indicates the presence of phosphorus, while the suffix "-ite" suggests that the compound contains a lower oxidation state of phosphorus. Therefore, aluminum phosphite is the correct name for AlPO3.

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10.

CaCl2 . 2H2O
- A.
  
  Calcium chloride dihydrate
- B.
  
  Calcium dichloride dihydrate
- C.
  
  Calcium chloride dihydride
- D.
  
  Calcium dichloride dihydride
Correct Answer
A. Calcium chloride dihydrate

Explanation
The correct answer is calcium chloride dihydrate because the compound CaCl2 . 2H2O is composed of calcium ions (Ca2+) and chloride ions (Cl-) combined with two water molecules (H2O). The prefix "di-" indicates that there are two water molecules present in the compound. Therefore, the correct name for this compound is calcium chloride dihydrate.

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10-item Test On Naming Of Compounds

H2SO4

C2H4

HI

Fe2S3

K4SiO5

Pb(OH)4

CaC2O4

HIO4

AlPO3

CaCl2 . 2H2O