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Acids & Bases - Chemistry

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<strong>Acids</strong> & <strong>Bases</strong> 30Problem: Prof. Stanley makes a new organic acid.He prepares a 0.01 M solution and finds that thepH is 4.0. What is the K a for this new acid?HA(aq)H + (aq) + A − (aq)Problem: What is the pH of a 0.01 M solution ofHCN? K a ≅ 4 × 10 −10

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