A buffer is prepared by mixing 75.0 mL of 0.40 M aqueous HF and 25.0 mL...

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A buffer is prepared by mixing 75.0 mL of 0.40 M aqueous HF and 25.0 mL...

A buffer is prepared by mixing 75.0 mL of 0.40 M aqueous HF and 25.0 mL of 0.80 M aqueous NaF. At 25^oC, K_a = 3.5 x 10^-4 for HF.

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(a). (4 points) Calculate the pH of the buffer.

(b). (4 points) Your instructor accidentally dropped the bottle containing the buffer in part (a) in a bucket of water, that initially contained 4.00 L of water. What is the pH of the resulting solution?

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A buffer is prepared by mixing 75.0 mL of 0.40 M aqueous HF and 25.0 mL...

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