Chemical Kineti...

The half year period for a zero order reaction is equal to:

$$ 2A \rightarrow B + C $$ It would be a zero order reaction when:

What is the activation energy for a reaction if its rate doubles when the temperature is raised from $$20^0C$$ to $$35^0C$$? (R = 8.314 J $$mol^{-1}K^{-1}$$)

99% of a first order reaction, was completed in 32 minute. When will 99.9% of the reaction complete?

For a first order reaction involving decomposition of $$N_2O_5$$ the following information is available
$$2N_2O_5(g)\rightarrow 4NO_2(g)+O_2(g)$$ rate $$=k[N_2O_5]$$
$$N_2O_5(g)\rightarrow 2NO_2(g)+1/2 O_2(g)$$ rate $$=k^\prime[N_2O_5]$$

The rate of first order reaction, $$A \rightarrow$$ Products, is $$7.5$$ M/s. If the concentration of $$A$$ is 0.5 M. The rate constant is:

Milk turns sour at $$40^0C$$ three times as faster as at $$0^0C$$. The energy of activation for souring of milk is:

If a first order reaction is completed to the extent of 75% and 50% in time intervals, $$t_1$$ and $$t_2$$, what is the ratio, $$t_1 : t_2$$?

A $$1^{st}$$ order reaction is $$50\%$$ complete in $$30$$ minutes at $$27^oC$$ and in $$10$$ minutes at $$47^oC$$. Calculate energy of activation for the reaction.
(Assume log $$3$$=$$0.48$$)

The decomposition $$NH_3$$ gas on a heated tungsten surface gave the following results: