Portland Community College
WEIVER 2 MAXE
PCC
CHEM 210
Department of Chemistry · Organic Chemistry I
SCIENCE FOR THE COMMON GOOD
EST. 1961
CHEM 210 — Exam #2 Review
A C I D S · B A S E S · P O LYATO M I C I O N S · N O M E N C L AT U R E · E L E C T R O LYT E S
INSTITUTION Portland Community College COURSE CODE CH 210
PROGRAM Organic Chemistry I · Science & ACADEMIC YEAR
Engineering Transfer
EXAM TITLE CHEM 210 — Exam #2 Acids, Bases & TOTAL QUESTIONS 30 Questions
Polyatomic Ions
COURSE TITLE Organic Chemistry I · Acids, Bases & Ionic FORMAT Multiple Choice — Name the Acid / Name
Nomenclature the Ion / Select the Correct Formula
STUDY GUIDE INSTRUCTIONS
▸ This flash-card style review covers strong acids, oxyacids, and polyatomic ions essential for CHEM 210 Exam #2.
▸ Each question presents a chemical formula—select the correct name, or vice versa.
▸ Mastery of these names, formulas, and charges is foundational for acid-base chemistry, equilibrium, and organic reactions.
▸ Correct answers and memory aids appear in the rationale below each question.
STRONG ACIDS · OXYACIDS · POLYATOMIC IONS · NOMENCLATURE Questions 1 – 30
1. What is the name of HF?
A. Hydrofluoric Acid
B. Hydrochloric Acid
C. Fluorous Acid
D. Hydrogen Fluoride
CORRECT ANSWER A. Hydrofluoric Acid
RATIONALE HF is hydrofluoric acid—a weak acid (unlike HCl, HBr, HI which are strong). Binary acids (H + nonmetal) use
the "hydro-...-ic acid" naming pattern. Note: HF is unique among the hydrogen halides in being a weak acid
due to the strong H–F bond. It etches glass and requires special storage in plastic containers.
2. What is the name of HCl?
A. Chloric Acid
B. Chlorous Acid
C. Hydrochloric Acid
D. Perchloric Acid
CORRECT ANSWER C. Hydrochloric Acid
RATIONALE HCl is hydrochloric acid—one of the seven strong acids. It completely dissociates in water (HCl → H⁺ + Cl⁻).
Binary acids use the "hydro-...-ic" prefix/suffix. ChlorIC acid (HClO₃) and chlorOUS acid (HClO₂) are oxyacids
containing oxygen—do not confuse with the binary acid HCl.
, 3. What is the name of HBr?
A. Bromic Acid
B. Hydrobromic Acid
C. Bromous Acid
D. Hydrogen Bromide
CORRECT ANSWER B. Hydrobromic Acid
RATIONALE HBr is hydrobromic acid—a strong acid. All hydrogen halides except HF are strong acids that completely
dissociate in water. The "hydro-...-ic" pattern applies to binary acids: hydro + halogen stem + ic acid. BromIC
acid (HBrO₃) is an oxyacid—a completely different compound.
4. What is the name of HI?
A. Iodic Acid
B. Hydroiodic Acid
C. Periodic Acid
D. Hydrogen Iodide
CORRECT ANSWER B. Hydroiodic Acid
RATIONALE HI is hydroiodic acid—the strongest of the hydrogen halide acids. It dissociates completely in water. Binary
acid naming: hydro- + iodine stem (iod) + -ic acid. Note the spelling: hydroIODic (not hydroiodinic). Iodic acid
(HIO₃) and periodic acid (HIO₄) are oxyacids.
5. What is the name of HNO₃?
A. Nitrous Acid
B. Nitric Acid
C. Hydronitric Acid
D. Pernitric Acid
CORRECT ANSWER B. Nitric Acid
RATIONALE HNO₃ is nitric acid—a strong acid and powerful oxidizing agent. Oxyacid naming: "-ate" ion (nitrate, NO₃⁻) →
"-ic acid" (nitric). "-ite" ion (nitrite, NO₂⁻) → "-ous acid" (nitrous, HNO₂). The seven strong acids include HNO₃,
H₂SO₄, HClO₄, HClO₃, HCl, HBr, and HI.
6. What is the name of HNO₂?
A. Nitric Acid
B. Nitrous Acid
C. Hydronitrous Acid
D. Nitrate Acid
CORRECT ANSWER B. Nitrous Acid
RATIONALE HNO₂ is nitrous acid—a weak acid. The nitrITE ion (NO₂⁻, one less oxygen than nitrate) gives nitrOUS acid.
Oxyacid naming pattern: -ate → -ic; -ite → -ous. Compare: HNO₃ (nitric, from nitrate) vs. HNO₂ (nitrous, from
nitrite). HNO₂ is unstable and decomposes readily.
WEIVER 2 MAXE
PCC
CHEM 210
Department of Chemistry · Organic Chemistry I
SCIENCE FOR THE COMMON GOOD
EST. 1961
CHEM 210 — Exam #2 Review
A C I D S · B A S E S · P O LYATO M I C I O N S · N O M E N C L AT U R E · E L E C T R O LYT E S
INSTITUTION Portland Community College COURSE CODE CH 210
PROGRAM Organic Chemistry I · Science & ACADEMIC YEAR
Engineering Transfer
EXAM TITLE CHEM 210 — Exam #2 Acids, Bases & TOTAL QUESTIONS 30 Questions
Polyatomic Ions
COURSE TITLE Organic Chemistry I · Acids, Bases & Ionic FORMAT Multiple Choice — Name the Acid / Name
Nomenclature the Ion / Select the Correct Formula
STUDY GUIDE INSTRUCTIONS
▸ This flash-card style review covers strong acids, oxyacids, and polyatomic ions essential for CHEM 210 Exam #2.
▸ Each question presents a chemical formula—select the correct name, or vice versa.
▸ Mastery of these names, formulas, and charges is foundational for acid-base chemistry, equilibrium, and organic reactions.
▸ Correct answers and memory aids appear in the rationale below each question.
STRONG ACIDS · OXYACIDS · POLYATOMIC IONS · NOMENCLATURE Questions 1 – 30
1. What is the name of HF?
A. Hydrofluoric Acid
B. Hydrochloric Acid
C. Fluorous Acid
D. Hydrogen Fluoride
CORRECT ANSWER A. Hydrofluoric Acid
RATIONALE HF is hydrofluoric acid—a weak acid (unlike HCl, HBr, HI which are strong). Binary acids (H + nonmetal) use
the "hydro-...-ic acid" naming pattern. Note: HF is unique among the hydrogen halides in being a weak acid
due to the strong H–F bond. It etches glass and requires special storage in plastic containers.
2. What is the name of HCl?
A. Chloric Acid
B. Chlorous Acid
C. Hydrochloric Acid
D. Perchloric Acid
CORRECT ANSWER C. Hydrochloric Acid
RATIONALE HCl is hydrochloric acid—one of the seven strong acids. It completely dissociates in water (HCl → H⁺ + Cl⁻).
Binary acids use the "hydro-...-ic" prefix/suffix. ChlorIC acid (HClO₃) and chlorOUS acid (HClO₂) are oxyacids
containing oxygen—do not confuse with the binary acid HCl.
, 3. What is the name of HBr?
A. Bromic Acid
B. Hydrobromic Acid
C. Bromous Acid
D. Hydrogen Bromide
CORRECT ANSWER B. Hydrobromic Acid
RATIONALE HBr is hydrobromic acid—a strong acid. All hydrogen halides except HF are strong acids that completely
dissociate in water. The "hydro-...-ic" pattern applies to binary acids: hydro + halogen stem + ic acid. BromIC
acid (HBrO₃) is an oxyacid—a completely different compound.
4. What is the name of HI?
A. Iodic Acid
B. Hydroiodic Acid
C. Periodic Acid
D. Hydrogen Iodide
CORRECT ANSWER B. Hydroiodic Acid
RATIONALE HI is hydroiodic acid—the strongest of the hydrogen halide acids. It dissociates completely in water. Binary
acid naming: hydro- + iodine stem (iod) + -ic acid. Note the spelling: hydroIODic (not hydroiodinic). Iodic acid
(HIO₃) and periodic acid (HIO₄) are oxyacids.
5. What is the name of HNO₃?
A. Nitrous Acid
B. Nitric Acid
C. Hydronitric Acid
D. Pernitric Acid
CORRECT ANSWER B. Nitric Acid
RATIONALE HNO₃ is nitric acid—a strong acid and powerful oxidizing agent. Oxyacid naming: "-ate" ion (nitrate, NO₃⁻) →
"-ic acid" (nitric). "-ite" ion (nitrite, NO₂⁻) → "-ous acid" (nitrous, HNO₂). The seven strong acids include HNO₃,
H₂SO₄, HClO₄, HClO₃, HCl, HBr, and HI.
6. What is the name of HNO₂?
A. Nitric Acid
B. Nitrous Acid
C. Hydronitrous Acid
D. Nitrate Acid
CORRECT ANSWER B. Nitrous Acid
RATIONALE HNO₂ is nitrous acid—a weak acid. The nitrITE ion (NO₂⁻, one less oxygen than nitrate) gives nitrOUS acid.
Oxyacid naming pattern: -ate → -ic; -ite → -ous. Compare: HNO₃ (nitric, from nitrate) vs. HNO₂ (nitrous, from
nitrite). HNO₂ is unstable and decomposes readily.
