Chemistry

Problem

The

e_{P-H}

and

e_{P-P}

are 76 and 51 kcal

\text{mol}^{-1}

. The difference in the heat of atomisation for

\text{PH}_3

and

\text{P}_2\text{H}_4

in kcal

\text{mol}^{-1}

is: a. 127 b. 178 c. 203 d. 25