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QUESTION

1- Calculate the pH of a 0.356 M aqueous solution of benzoic acid ( C 6 H 5 COOH , K a = 6.310 -5 ) and the equilibrium concentrations of the weak...

1- 0.356benzoic acidC6H5COOHa6.3×10-5

pH  =  --------

[C6H5COOH ]equilibrium = -----------  M

[C6H5COO- ]equilibrium =  -------- M

2- Calculate the pH of a 0.492 M aqueous solution of chlorous acid (HClO2, Ka = 1.1×10-2) and the equilibrium concentrations of the weak acid and its conjugate base.

pH  =  -------

[HClO2]equilibrium = -------  M

[ClO2- ]equilibrium =  ------- M

3-

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