1000 mL of a buffer solution contains 0.275 moles of HCN, and 0.175 moles of NaCN. Ka of HCN = 6.2 x 10^-10. a) calculate the initial pH b) calculate the pH of the buffer after the addition of 27.5 L of 1.0 M of HCl. c) what is the change in pH of the solution if the same amount of Hcl which was used in part (b) were added to 1000 mL pure water.
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1000 mL of a buffer solution contains 0.275 moles of HCN, and 0.175 moles of NaCN. Ka of HCN = 6.2 x 10^-10.
a) calculate the initial pH
b) calculate the pH of the buffer after the addition of 27.5 L of 1.0 M of HCl.
c) what is the change in pH of the solution if the same amount of Hcl which was used in part (b) were added to 1000 mL pure water.
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