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4. 16.55 Calculate the pH of an aqueous solution at 25°C that is 0.095 M in hydrocyanic acid (HCN). (K for hydrocyanic acid=4
TOmTzctu. 10. 16.61 Calculate the Ka of a weak acid if a 0.19-M aqueous solution of the acid has a pH of 4.52 at 25°C Answers
2. 16.71 The pH of a 0.30-M solution of a weak base is 10.66 at 25°C. What is the K of the base? Answers
4. 16.73 Calculate the pH at 25°C of a 0.61-M aqueous solution of a weak base B with a K of 1.5 x 10. Answers
Computational Problems 1. 16.79 Calculate Kt for each of the following ions: CN, F, CH3COO , HCO5 (See Table 16.6.) Answers
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(4) Given the concentration of HCN is 0.095 M Ionizati on of HCNis as follows HCN(aq) CN (aq)H (aq) I(M) 0.095 С(М): E (M 0.0

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