7. At a certain temperature, the helf-life period for the catalytic decomposition of NH3 at 50 mmHg was 4 hour and at 100 mmHg pressure was 3.2 hour. The order of the reaction is
A. three
B. zero
C. two
D. one.
7. At a certain temperature, the helf-life period for the catalytic decomposition of NH3 at 50 mmHg was 4 hour and at 100 mmHg pressure was 3.2 hour. The order of the reaction is
A. three
B. zero
C. two
D. one.