Question
Which option lists all 7 strong acids?
(a) HCl, HBr, HI, H₂SO₄, HNO₃, HClO₃, HClO₄ (b) HCl, HBr, HI, HF, H₂SO₄, HNO₃, HClO₃ (c) HCl, HBr, HF, H₂SO₄, HNO₃, HClO₃ (d) HCl, HBr, HF, H₂SO₄, HNO₃, HClO₄ (e) CH₃COOH, HBr, HF, HCN, HNO₃, HClO₂
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Evidence boundary
This page solves Q4 of the UT Austin CH305 Spring 2020 Exam 1 master version using its five option groups. The official key selects (a). The seven-acid convention explicitly includes HClO₃; the answer does not substitute a six-acid list. The discussion uses introductory aqueous acid strength and distinguishes sulfuric acid's first and second ionizations.