One litre each of a Buffer solution is taken in two beakers connected through a salt bridge. Platinum electrode is immersed in each beaker and electrysis is carried out for 10,000 sec. using a current of 9.65 Ampere. The Buffer contain (1)/(3) mole each of Na_(2)HPO_(4) and NaH_(2)PO_(4) Initially. using the given data answer the following. Given: ltbr. pK_(a) (H_(3)PO_(4)) = 4, pK_(a) (H_(2)PO_(4)^(-)) = 7 , pK_(a) (HPO_(4)^(2-)) = 10 log 2 = 0.3, log3 = 0.48 2.303 (RT)/(F) = 0.06 at 298K What is pH of solution in which reduction taken place duringelectrolysis.

One litre each of a Buffer solution is taken in two beakers connected

1.	One litre each of a Buffer solution is taken in two beakers connected through a salt bridge. Platinum electrode is immersed in each beaker and electrysis is carried out for 10,000 sec. using a current of 9.65 Ampere. The Buffer contain (1)/(3) mole each of Na_(2)HPO_(4) and NaH_(2)PO_(4) Initially. using the given data answer the following. Given: ltbr. pK_(a) (H_(3)PO_(4)) = 4, pK_(a) (H_(2)PO_(4)^(-)) = 7 , pK_(a) (HPO_(4)^(2-)) = 10 log 2 = 0.3, log3 = 0.48 2.303 (RT)/(F) = 0.06 at 298K What is pH of solution in which reduction taken place duringelectrolysis.
Answer» `12.59` `11.91` `13.01` `11.51` Solution :In cathode: `K_(eq) = (K_(w))/(K_(3)) = 10^(-4)` `PO_(4)^(3-) +H_(2)O hArr HPO_(4)^(2-) +OH^(-)` `RARR pOH = (1)/(2) pK_(b) - (1)/(2)logC rArr pH = 11.91`