The enthalpy change states for the following processes are listed below :
Given that the standard states for iodine and chlorine are ` I _(2) (s) and C I _(2) (g)` , the standard enthalpy of formation for ` I C I (g) ` is:

Options

A. `-16.8 kJ mol^(-1)`
B. `+16.8 kJ mol^(-1)`
C. `+244.8 kJ mol^(-1)`
D. `-14.6 kJ mol^(-1)`

Answer

B

Explanation

`(1)/(2)I_(2(g))+(1)/(2)Cl_(2(g))rarr ICl_((g)), Delta H_(f)(ICl) = ?`
`eq.(v)=(1)/(2)[eq(i)+eq(ii)+eq(iv)]-eq(iii)`
`Delta H=(1)/(2)[Delta H_(1)+Delta H_(2)+Delta H_(4)]-Delta H_(3)`