The decomposition of ammonia on a tungsten surface at 1100 °C

The decomposition of ammonia on a tungsten surface at $110 0^{?} C$ $NH_{3} ? 1/2 N_{2} + 3/2 H_{2}$ is zero order in $NH_{3}$ . In one experiment, when the initial concentration of $NH_{3}$ was $0.00157 M$ , the concentration of $NH_{3}$ dropped to $2.59 \times 1 0^{? 4} M$ after 297 seconds had passed. Based on these data, the rate constant for the reaction is $M s^{? 1}$ .

Question

The decomposition of ammonia on a tungsten surface at 1100 °C

The decomposition of ammonia on a tungsten surface at

110 0^{?} C

NH_{3} ? 1/2 N_{2} + 3/2 H_{2}

is zero order in

NH_{3}

. In one experiment, when the initial concentration of

NH_{3}

was

0.00157 M

, the concentration of

NH_{3}

dropped to

2.59 \times 1 0^{? 4} M

after 297 seconds had passed. Based on these data, the rate constant for the reaction is

M s^{? 1}

.

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