1.

For the synthesis of ammonia at 300 K : N_2(g)+3H_2(g)to2NH_3(g) Calculate the value of DeltaG^@ in Kcal and give your answer in magnitude by using the following data : {:(( ),N_2,H_2,NH_3),(DeltaH_f(Kcal//"mole"),0,0,-10),(S^@(Cal//"K-mole"),40,30,45):}

Answer»


SOLUTION :`DeltaH_R^@=2xxDeltaH_(f(NH_3))^@-3xxDeltaH_(f_(H_2))^@-DeltaH_(f_(N_2))^@=-20 KCAL`
`DeltaS_R^@=2xxS_(NH_3)^@-3xxS_(H_2)^@-S_(N_2)^@=2xx45-3xx30-40=-40` Cal/K
`DeltaG^@=DeltaH^@-TDELTAS^@= - 20 - (300xx(-40))/1000=-20+12=-8 Kcal`


Discussion

No Comment Found

Related InterviewSolutions