For the first order reaction

$2{\mathrm{N}}_2{\mathrm{O}}_5\left(g\right)\to 4{\mathrm{NO}}_2\left(g\right)+{\mathrm{O}}_2\left(g\right)$

The concentration of the reaction decreases exponentially with time 

The half-life of the reaction decreases with increasing temperature 

The half-life of the reaction depends on the initial concentration of the reactant 

The reaction proceeds to 99.6% completion in eight half-life duration