The pH of 1N aqueous solutions `HCl,CH_(3)COOH and HCOOH` follows the order

The pH of 1.0 aqueous solution of NaCL,CH_(3)COONa" and "NH_(4)Cl will follow the order :

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 .

The pH values of 0.1 M solution of HCl, CH3COOH, NH4Cl and CH3COONa will have the order :

The pH values of 0.1 M solution of HCl, CH3COOH, NH4Cl and CH3COONa will have the order :

The acidic strength of HCOOH, CH_3COOH and CI-CH_2-COOH follows the order -

CH_(3) COOH and HCOOH_(3) are a pair of

The pH of 1.2 % (w/v) aqueous solution of CH_(3) COOH at 25^(@) C is (pK_(a) = 4.7)

Between CH_3COOH and HCOOH, HCOOH will be