1.

Assume each reaction is carried out in an open container. For which reaction will be Delta H = Delta U ?

Answer»

`C(s) + 2H_(2)O(g) rarr 2H_(2)(g) + CO_(2)(g)`
`PCl_(5)(g) rarr PCl_(3)(g) + Cl_(2)(g)`
`2CO(g) + O_(2)(g) rarr CO_(2)(g)`
`H_(2)(g) + Br_(2)(g) rarr 2HBr(g)`

SOLUTION :`Delta U = Delta E + Delta n_(g) RT`
For the reaction
`H_(2)(g) + Br_(2)(g) rarr 2HBr(g)`
`Delta n_(g) = 2 - (1 + 1) = 0`
:. `Delta H = Delta U`


Discussion

No Comment Found

Related InterviewSolutions