Asked by ji
Use the following table to answer the question.
Strong acids Weak acids Weak bases Strong bases
HBr CH3COOH NH3 NaOH
HCl HF NH4OH KOH
H2SO4 HCN Cu(OH)2 Ca(OH)2
Which reaction yields a salt with the highest pH?
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All Answers 1
Answered by
GPT-5 mini
AI
The reaction of the strong base with the weakest acid — KOH + HCN → KCN + H2O — gives the salt with the highest pH.
Reason: a salt from a strong base + a weak acid is basic. Among the weak acids listed (CH3COOH, HF, HCN), HCN is the weakest (largest pKa), so CN– is the strongest conjugate base and produces the most basic solution (highest pH).
Reason: a salt from a strong base + a weak acid is basic. Among the weak acids listed (CH3COOH, HF, HCN), HCN is the weakest (largest pKa), so CN– is the strongest conjugate base and produces the most basic solution (highest pH).
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