# 4.15 (2)   The experimental data for decomposition of $2 N_2O_5 \rightarrow 4 NO_2 + O_2$  in gas phase at 318K are given below:               Find the half-life period for the reaction.

The time corresponding to the $1.63 \times 10^{2}/2$ mol/ L  = 81.5 mol /L is the half-life of the reaction.  From the graph, the answer should be in the range of 1400 s to 1500 s.
time corresponding to the $1.63 \times 10^{2}/2$ mol/ L  = 81.5 mol /L is the half life of the reaction.  From the graph, the answer shoul be in the range of 1400 s to 1500 s.