Question

In the reduction of nitric oxide, 50% of the reaction was completed m 10 seconds when the initial pressure was 336 mmHg, and in 14 seconds when the initial pressure was 288 mm Hg. Find the order of the reaction.

Answer 1

For a certain first-order gas-hase reaction$$\ce{A \rightarrow B + C}$$the time required for half of an initial amount of A to decompose is 8.8 min. If the initial pressure of A is 400 mmHg, the time required to reduce the partial pressure of A to 50 mmHg is:(a) 1.1 min
(b) 17.6 min
(c) 26.4 min
(d) 35.2 min
(e) 70.4 min

The correct answer is (c).