Question

A hypothetical reaction, `A rarr 2B`, proceeds via following sequence of steps
`{:(ArarrC,,DeltaH = q_(1),,,),(CrarrD,,DeltaH = q_(2),,,),((1)/(2)D rarrB,,DeltaH = q_(3),,,):}`
The heat of reaction is
A. `q_(1)-q_(2)+2q_(3)`
B. `q_(1)+q_(2)-2q_(3)`
C. `q_(1)+q_(2)+2q_(3)`
D. `q_(1)+2q_(2)-2q_(3)`

Answer 1

Correct Answer - C
Multiply eqn. `(iii)` by `2` and add all the three.