Calculate the pH of a solution that is prepared by dissolving 0.470 mol of hydrocyanic acid...
Calculate the pH of a solution that is prepared by dissolving
0.470 mol of hydrocyanic acid
(HCN, Ka =
6.17×10-10) and 0.180
mol of nitrous acid
(HNO2, Ka =
4.60×10-4) in water and diluting to
2.30 L. Also, calculate the equilibrium
concentrations of HCN,
CN-, HNO2,
and NO2-. Do not make an
approximation unless the initial acid concentration is greater than
1000 × Ka. (Hint: The pH will be determined by the
stronger acid of this pair.)
pH =
[HCN] = M
[CN-] = M
[HNO2] = M
[NO2-] = M
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Calculate the pH of a solution that is prepared by dissolving
0.470 mol of hydrocyanic acid...
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