AP Chemistrymediummcq1 pt
Which list ranks acid strength correctly?
A.HNO₃ > HNO₂ > HCN
B.HCN > HNO₂ > HNO₃
C.HNO₂ > HNO₃ > HCN
D.All three are equally strong
Explanation
Core Concept
Nitric acid is strong; nitrous acid is a moderate weak acid (Ka 5.6 × 10⁻⁴); HCN is very weak (6.2 × 10⁻¹⁰). Oxyacid strength drops as oxygen count falls.
Correct Answer
AHNO₃ > HNO₂ > HCN
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