Questions on Acids – Naming and Formulas
30 Multiple-Choice Questions: Acids – Naming and Formulas
Questions
1. What is the formula for hydrochloric acid?
A) HClO
B) HClO₄
C) HCl
D) H₂Cl
E) ClOH
2. What is the correct name for H₂SO₄?
A) Sulfurous acid
B) Sulfuric acid
C) Hydrogen sulfate
D) Sulfate acid
E) Sulfhydric acid
3. What is the name of HNO₃?
A) Nitrous acid
B) Nitric acid
C) Hydrogen nitrate
D) Nitrate acid
E) Nitrogenic acid
4. What is the formula for phosphoric acid?
A) H₃PO₂
B) H₃PO₄
C) H₂PO₄
D) H₃P
E) H₄PO₄
5. What is the correct name for H₂CO₃?
A) Carbonous acid
B) Carbonic acid
C) Carbon dioxide acid
D) Hydrogen carbonate
E) Carbonate acid
6. What is the formula for hydrobromic acid?
A) HBrO
B) H₂Br
C) HBr
D) HBrO₄
E) H₂BrO
7. What is the name of HI?
A) Hydroiodic acid
B) Iodic acid
C) Iodous acid
D) Hydrogen iodide
E) Iodine acid
8. What is the formula for acetic acid?
A) HCOOH
B) HCH₃COOH
C) CH₃COOH
D) H₂C₂O₄
E) H₂C₂H₃O₂
9. What is the name of HClO₃?
A) Hypochlorous acid
B) Chloric acid
C) Perchloric acid
D) Hydrochloric acid
E) Chlorous acid
10. What is the formula for nitrous acid?
A) HNO₄
B) HNO₂
C) HNO₃
D) H₂NO₂
E) HNO
11. What is the name of H₂S?
A) Hydrogen sulfur
B) Sulfuric acid
C) Hydrosulfuric acid
D) Sulfurous acid
E) Hydro sulfurous acid
12. What is the formula for perchloric acid?
A) HClO
B) HClO₂
C) HClO₃
D) HClO₄
E) HCl
13. What is the name of H₂SO₃?
A) Sulfurous acid
B) Sulfuric acid
C) Hydrogen sulfite
D) Sulfite acid
E) Hydrosulfurous acid
14. What is the formula for hydrofluoric acid?
A) HF
B) H₂F
C) HF₂
D) HFO
E) H₂FO
15. What is the name of HNO₂?
A) Nitrous acid
B) Nitric acid
C) Nitronium acid
D) Hydrogen nitrate
E) Nitrate acid
16. What is the formula for hypochlorous acid?
A) HClO
B) HClO₂
C) HClO₃
D) HClO₄
E) HCl
17. What is the name of H₃PO₃?
A) Phosphoric acid
B) Hypophosphorous acid
C) Phosphorous acid
D) Phosphite acid
E) Hydrogen phosphite
18. What is the formula for hydroiodic acid?
A) HI
B) HIO
C) HIO₃
D) HIO₄
E) H₂I
19. What is the name of HCN?
A) Hydrocarbonic acid
B) Hydrocyanic acid
C) Cyanic acid
D) Cyanous acid
E) Hydrogen cyanide
20. What is the formula for hydroselenic acid?
A) H₂SeO₃
B) HSe
C) H₂Se
D) HSeO₄
E) H₂SeO₂
21. What is the name of H₂CrO₄?
A) Chromic acid
B) Chromate acid
C) Hydrogen chromate
D) Chromous acid
E) Perchromic acid
22. What is the formula for chlorous acid?
A) HClO₃
B) HClO
C) HClO₂
D) HClO₄
E) HCl
23. What is the name of H₂C₂O₄?
A) Ethanoic acid
B) Formic acid
C) Oxalic acid
D) Acetic acid
E) Carbonic acid
24. What is the formula for hydrocyanic acid?
A) H₂CN
B) HCN
C) H₂C₂N₂
D) H₃CN
E) HCN₂
25. What is the name of HClO₂?
A) Hypochlorous acid
B) Chloric acid
C) Chlorous acid
D) Perchloric acid
E) Hydrochlorous acid
26. What is the formula for hydrosulfuric acid?
A) H₂S
B) H₂SO₄
C) H₂SO₃
D) HS
E) HSO₃
27. What is the name of H₂MnO₄?
A) Permanganic acid
B) Manganic acid
C) Manganous acid
D) Manganic(IV) acid
E) Manganic(VI) acid
28. What is the formula for boric acid?
A) HBO₃
B) H₃BO₃
C) H₂BO₂
D) H₂B
E) H₃B₂O₃
29. What is the name of HIO₄?
A) Iodic acid
B) Iodous acid
C) Hydroiodic acid
D) Periodic acid
E) Iodine oxide acid
30. What is the formula for arsenic acid?
A) H₃AsO₃
B) H₂AsO₃
C) H₃AsO₄
D) H₂AsO₄
E) HAsO₂
- Questions on Polyatomic Ions – Naming and Formulas
- Questions on Ternary Ionic Compounds – Naming and Formulas
- Questions on Binary Molecular Compounds – Naming and Formulas
Answers with Explanations
1. C) HCl – "Hydro-" and "-ic" for binary acid with chlorine.
2. B) Sulfuric acid – H₂SO₄ is the acid form of sulfate.
3. B) Nitric acid – HNO₃ comes from nitrate ion.
4. B) H₃PO₄ – Three H⁺ for the phosphate ion.
5. B) Carbonic acid – H₂CO₃ from carbonate.
6. C) HBr – Binary acid of hydrogen and bromine.
7. A) Hydroiodic acid – Binary acid with iodine.
8. C) CH₃COOH – Common organic (carboxylic) acid.
9. B) Chloric acid – HClO₃ comes from chlorate.
10. B) HNO₂ – Nitrous acid comes from nitrite.
11. C) Hydrosulfuric acid – Binary acid of sulfur.
12. D) HClO₄ – Perchlorate ion forms perchloric acid.
13. A) Sulfurous acid – From sulfite ion.
14. A) HF – Binary acid of fluorine.
15. A) Nitrous acid – Comes from nitrite ion.
16. A) HClO – From hypochlorite ion.
17. C) Phosphorous acid – H₃PO₃ corresponds to phosphite.
18. A) HI – Binary acid of hydrogen and iodine.
19. B) Hydrocyanic acid – HCN, common weak acid.
20. C) H₂Se – Binary acid of selenium.
21. A) Chromic acid – H₂CrO₄ from chromate.
22. C) HClO₂ – Chlorous acid from chlorite ion.
23. C) Oxalic acid – H₂C₂O₄ is a dicarboxylic acid.
24. B) HCN – Correct formula for hydrocyanic acid.
25. C) Chlorous acid – HClO₂ comes from chlorite.
26. A) H₂S – Binary acid of hydrogen and sulfur.
27. A) Permanganic acid – H₂MnO₄ comes from MnO₄²⁻.
28. B) H₃BO₃ – Standard form of boric acid.
29. D) Periodic acid – HIO₄ from periodate ion.
30. C) H₃AsO₄ – Arsenic acid comes from arsenate.
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