At , a gaseous reaction is found to be first order. Starting with pure , the total…

CHEMISTRY · Single correct · CBSE · Chemistry · Chemical Kinetics · Chemical Kinetics

Problem

373\text{ K}

, a gaseous reaction

A\rightarrow2B+C

is found to be first order. Starting with pure

A

, the total pressure at the end of

10\text{ min}

176\text{ mm Hg}

and, after a long time when

A

is completely dissociated, it is

270\text{ mm Hg}

. The pressure of

A

at the end of

10\text{ min}

is: (a)

94\text{ mm Hg}

(b)

47\text{ mm Hg}

(c)

43\text{ mm Hg}

(d)

90\text{ mm Hg}