Question

1) A second order reaction has a rate constant of 1.5 ×10^-5 and a frequency factor of 5.2 ×10^4 at80°c. What is the fraction of the activated molecules?
2) An electric heater rated (2A, 250V) is used to heat a liquid of specific heat capacity 5.2J/g/°c and a mass 400g contained in a calorimeter of thermal capacity 30Kj/°c. If the temperature rises from 20°c to 80°c. Calculate the heating time.