A reaction, `A + B rarr C + D+ q` is found to have a positive entropy change. The reaction will be spontaneous at which temperature?

A reaction A + B rarr C + D + q is formed to have a positive entropy change. The reaction will be.

A reaction, 'A+B rarr C+D+q' is found to have a positive entropy change. The reaction will be i) possible at high temperature ii) possible oniy at low temperature iii) not possible at any temperature iv) possible at any .temperature.

For a chemicai reaction (A) rarr (B) it is found that the rate of the reaction guadruples when the concentration of (A) is doubled.The rate expression for the reaction is rate =(k)[(A)] (n) , where the value of (n) is a)1 b)2 c)0 d)3

The gaseous reaction A(g) to 2B(g) + C(g) is found to be first-order respect to A. The reaction is started with p_A = 90 mmHg, the pressure after 10 min is found to be 180 mmHg. The rate constant of the reaction is

a) For the oxidation of iron 4 Fe_((s))+3O_(2(g))rightarrow2Fe_2O_(3(s)) , entropy change is -549.4 JK^-1mol^-1 at 298 K. Inspite of the negative entropy change of this reaction, why is the reaction spontaneous? ( DeltaH_r^0 for the reaction is - 1648xx10^3Jmol^-1 ). b) Write the difference between extensive and intensive properties. Give one example of each.