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August 1, 2014

Homework Help: chemistry

Posted by bob on Sunday, March 25, 2012 at 6:06pm.

2- A 0.310 M solution of a weak acid, HX, has a pH of 2.53
a. Find the [H+] and the percent ionization of nitrous acid in this solution.
b. Write the equilibrium expression and calculate the value of Ka for the weak acid.
c. Calculate the pH of the solution formed by adding 10 g of KX (molar mass = 59.0 g•mol–1) to 650 mL of 0.0125 M solution of the weak acid.
d. Determine the pH of a solution formed by adding 10 g of KX to 750 mL of water.

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