1.

Given N_2(g)+3H_2(g)=2NH_3(g), triangleH^@=-22kcal. The standard enthalpy of formation of NH_3 gas is:

Answer»

`-11 kcal/mol`
`11 kcal/mol`
`-22 kcal/mol`
`22 kcal/mol`

ANSWER :A


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