For the adsorption of hydrogen on platinum, the activation energy is 30 kJ mol-1 and for the adsorption of hydrogen on nickel, the activation energy is 41.4 kJ mol-1 . The logarithm of the ratio of the rates of chemisorption on equal areas of the metals at 300 K is ……… (Nearest integer) Given: ln 10 = 2. 3 R = 8.3 JK-1 mol-1