61. The solubility product of CuS, AgS and HgS are 10 37, 104 and 1054 respectively. The solubility of these sulphides will be in the order (1) HgS> AgS > Cus (2) AgS>HgS > CuS (3) CuS AgS > HgS (4) AgS>CuS > HgS 62. Equimolar solutions of HF, HCOOH and HCN at 298 K. have the values of K, are 6.8 10, 1.8 104 and 4.8 10 respectively, what will be the order of their acidic strength? (1) HF>HCN>HCOOH (2) HFHCOOH > HCN. (3) HCN>HF> HCOOH (4) HCOOH>HCN>HF 63. The rate constant of a reaction depends on :- (1) Temperature (2) Pressure (3) Extent of reaction (4) Initial concentration of the reactant 64. The data for the reaction A + B C is Exp. [A]o [B]0 initial rate 1. 0.012 0.035 0.10 2. 0.024 0.035 0.80 3. 0.012 0.070 0.10 4. 0.024 0.070 0.80 The rate law is: (1) r = k [B] (2) r=k[A] (3) r=k [A] [B] (4) r= k [A] [B]