A hypothetical reaction, $A ightarrow 2 B$, proceeds via following sequence of steps :\ $A ight

Question

A hypothetical reaction, $A ightarrow 2 B$, proceeds via following sequence of steps :\ $A ightarrow C ; \Delta H=q_{1}$\ $C ightarrow D ; \Delta H=q_{2}$\ $\frac{1}{2} D ightarrow 2 B ; \Delta H=q_{3}$\ The heat of reaction is\

Professor PC Thomas Classes · Answer

$
\begin{aligned}
& 	ext { (c) }: A ightarrow C ; \Delta H=q_1 \
& C ightarrow D ; \Delta H=q_2 \
& D ightarrow 2 B ; \Delta H=q_3 	imes 2
\end{aligned}
$
Adding all three equations, we get
$
A ightarrow 2 B ; \Delta H=q_1+q_2+2 q_3
$