Chemistry

Problem

518^{\circ}\text{C}

, the rate of decomposition of a sample of gaseous acetaldehyde, initially at a pressure of 363 Torr, was

1.00 \text{ Torr s}^{-1}

when 5% had reacted and

0.5 \text{ Torr s}^{-1}

when 33% had reacted. The order of the reaction is (1) 2 (2) 3 (3) 1 (4) 0