question_answer

The reaction \[As{{H}_{3}}\left( g \right)\to As\left( s \right)+3/2\,{{H}_{2}}\left( g \right)\] was followed at constant volume at \[310{}^\circ C\] by measuring the gas pressure at intervals. Show from the following figures that reaction is of first order.

Time (in hrs)	0	5	7.5	10
Total pressure (in mm)	758	827	856	882

Answer:

54.00