Question

i. `H_(2)(g) +CI_(2)(g)rarr 2HCI(g),DeltaH =- x kJ`
ii. `NaCI +H_(2)SO_(4) rarr NaHSO_(4) +HCI, DeltaH =- y kJ`
iii. `2H_(2)O +2CI_(2) rarr 4HCI +O_(2),DeltaH =- z kJ`
From the above equations, the value of `DeltaH` of `HCI` is
A. `-x kJ`
B. `-y kJ`
C. `-z kJ`
D. `-x//2 kJ`

Answer 1

Correct Answer - D
As per definition, the equation `(i)` represents the formation of `2` moles of `HCl`. Hence `DeltaH_(f)` of `HCl(g)=-X//2kJ mol^(-1)`.