Question

1- Which salts will be more soluble in an acidic solution than in pure water?

Ag2SO4

AgI

CuCN

Cd(OH)2

CsClO4

2- If the Kb of a weak base is 8.7×10^−6, what is the pH of a 0.27 M solution of this base?pH=

Answer 1

1.

ANSWER The a weak more in u form dissolve sact that has anion which acid on addition of 4tions will acid than in Water explained below thus salt cation anian On adding th Á combines with it to form an oid Á las + Htay - HA and if dissociate from the équilibrium the salt the aid formed is weak , it does not and so A gets continuously removed solution forming HA This shifts the of equation towards right making more and more soluble Ag, Soy ; Soy² + H + H & CucN ; CN + 4 + - Hsoy- weak and ____HZ strong acid - HCN weak acid HO weak and - Helly a strong acid Cdlow) are more water - (d (OH) ; on + H+ Coney ; Con + H+ Thus, Ag Soy , cuch acid than and in soluble