Question

How many moles of sodium propionate should be added to one litre of an aqueous solution containing 0.020 mole of propionic acid to obtain a buffer solution of pH 4.75? What will be pH if 0.010 mole of hydrogen chloride is dissolved in the above buffer solution. Compare the last pH value with the pH of 0.010 molar HCl solution. Dissociation constant of propionic acid, $K_a$ at 25ºC = 1.34 × 10⁻⁵.

Answer 1

Answer:

ans is 1.34×10 power-5

Explanation:

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Answer 2

Answer:

The answer is 1.34× 10^-5