`pK_(a)` of `CH_(3)COOH` is 4.74 . The pH of 0.01 M `CH_(3)COONa` IS

Degree of dissocation of CH_(3)COOH and NH_(4)OH are the same. If 0.1 M solution of CH_(3)COOH has pH = 4.0 , them pH of 0.01 M NH_(4)OH will be

Find the change in pH when 0.01 mole CH_(3)COONa is added to one litre of 0.01 M CH_(3)COOH soluton (pK_(a) = 4.74)

Assertion (A): The pH of an aqueous solution of CH_(3)COOH remains unchanged on the addition of CH_(3)COONa . Reason (R) : The pH of an aqueous solution of CH_(3)COOH remains unchanged on the addition of CH_(3)COONa . Reason (R) : The ionisation of CH_(3)COOH is supressed by the addition of CH_(3)COONa .

What amount of CH_(3)COONa is to be added to one litre of 0.1(M) CH_(3)COOH solution so that the pH becomes 4.0? [K_(a)=1.8xx10^(-3)] .

A buffer solution contains 100mL of 0.01 M CH_(3)COOH and 200mL of 0.02 M CH_(3)COONa . 700mL of water is added, pH before and after dilution are (pK_(a)=4.74)