Question

A first order reaction has a rate constant of 10^-3 per seond.how much time will it take for 10g of the reactant to reduce 2.5 g

Answer 1

Answer:

Explanation:

We know that for a first order reaction

t=2.303klog.aa−x

Here, initial concentration a=10g and concentration left after time ts=2.5g

i.e., (a−x)=2.5g,

Specific reaction conctant k=10−3s−1

∴ Time required for the reactant to reduce to 2.5g

=2.30310−3×log4=2.30310−3×0.6021 (Given log4=0.6021)

=1386.6s

Answer 2

Answer:

1386.6s.............