Chemical Kineti...

At least how half-lives should elapse for a I order reaction $$A\rightarrow$$ products so that the reaction is at least $$95%$$ completed ? $$(\log 2=0.3)$$

Which one of the following plots is correct for a first order reaction:

The rate constant of the first-order reaction may be described by following equation:

The first order reaction has half-life of $$18$$ hrs. What percentage of the reactant will remain after $$24$$hrs  $$\left( {\log 2 = 0.3,\log 2.5 = 0.4} \right)$$

A reaction proceeds 5 times more at $${ 60 }^{ o }$$C as it does at $${ 30 }^{ o }$$C the energy of activation is $$(\log { 5=0.69990 } )$$

In a first order reaction ,if $$25\%$$ of the reaction is completed in $$50$$ minutes $$50\%$$ of the total reaction is completed in _________ minutes (approx):

What is the activation energy for a reaction if the rate doubles when the temperature is raised from $$20^{o}C$$ to $$35^{o}C$$? $$(R=8.134\ J\ mol^{-1}K^{-1})$$

K for a zero order reaction is $$2\times10^{-2}\,mol\,L^{-1}sec^{-1}$$. If the concentration of the reactant after 25 sec is 0.5 M, the initial concentration must have been:

For any first order reaction following observation is made. If at temperature (T) half life of the reaction is 6930 second and at temperature ($$T^1$$) half of the reaction is $$0.693 \mu $$ second, then calculate $$\frac{T^1}{T}$$

For the chemical reaction, $$A \to $$ products, the following $$\log \,K = 16.398 - \cfrac{{2800}}{T}$$
Arrhenius factor for the reaction is______________