Ionic Equ i l l

1) Equal volume of two solution having pH = 2 and pH = 10 are mixed together at 90° C.

Then pH of resulting solution is: (Take K_w at 90°C = 10^-12 )

[a] 2 + log 2 [B] 10 - log 2 [c] 7 [d] 6

2) The ionazation constant of benzoic acid is 6.46 x10^-5 and K_sp for silver
benzoate is 2.5 x 10^-13 . How many times silver benzoate more soluble in a buffer of

PH = 3.19 as compared to its solubility in pure water ?

[a] 3.317 [B] 6 - log3 [C] 6 + 2 log2 [D] 6 - 2 log3