Chemical Kineti...

First order reaction completes $$20\%$$ in $$5$$ min. How much time it will take for $$60\%$$ completion?

A first order reaction takes $$40$$ min for $$30$$% decomposition. What will be $$t_{1/2}$$?

The reaction $$2X \rightarrow Y + Z$$ would be zero order reaction when:

The decomposition of a substance follows first order kinetics. If its concentration is reduced to $$1/8$$ of its initial value in $$12$$ minutes, the rate constant of the decomposition system is ?

For the first order reaction,
$$2H_2O_2\rightarrow 2H_2\,+\,O_2 \,\log k\,=\,14.34\,-\,1.25\,\times\,10^4\,K/T$$. The energy of activation for the above reaction if its half life period is 256 min.

At low pressure, the fraction of the surface covered follows:

The following data were obtained during the first order thermal decomposition of $$SO_2Cl_2$$ at constant volume
$$SO_2Cl_{2(g)} \rightarrow SO_{2(g)}\,+\,Cl_{2(g)}$$

The rate constant of a first order reaction is $$15\times 10^{-3} s^{-1}$$. How long will $$5.0\ g$$ of this reactant take to reduce to $$3.0\ g$$?

The half-life of the reaction $$X\rightarrow Y$$, following first-order kinetics, when the initial concentration of $$X$$ is $$0.01$$ mol L$$^{-1}$$ and the initial rate is $$0.00352$$ mol L$$^{-1}$$ min$$^{-1}$$ will be :