The p H o f 0.50 M K H 2 P O 4 ( a q ) has to be calculated. Concept Introduction: The p H of a solution of an amphiprotic salt is given below. p H = 1 2 ( p K a 1 + p K a 2 ) ...... ( 1 ) The above equation is valid if S ≫ K w / K a 2 a n d S ≫ K a 1 , where, S is the initial concentration of the salt.

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Chapter 6, Problem 6E.2BST

Interpretation Introduction

Interpretation:

The pH of 0.50 M KH2PO4(aq) has to be calculated.

Concept Introduction:

The pH of a solution of an amphiprotic salt is given below.

pH=12(pKa1+pKa2)......(1)

The above equation is valid if S≫Kw/Ka2 and S≫Ka1, where, S is the initial concentration of the salt.

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