For the hypothetical reaction A_(2(g)) + B_(2(g)) hArr 2AB_((g)) Delta_(r ) G^(@) and Delta_(r)S^(@) are 20 kJ/mol and -20 JK^(-1) mol^(-1) respectively at 200K. If Delta_(r)C_(P) is 20 JK^(-1) mol^(-1) then Delta_(r ) H^(@) at 400K is

For the hypothetical reaction A_(2(g)) + B_(2(g)) hArr 2AB_((g)) Delta

1.	For the hypothetical reaction A_(2(g)) + B_(2(g)) hArr 2AB_((g)) Delta_(r ) G^(@) and Delta_(r)S^(@) are 20 kJ/mol and -20 JK^(-1) mol^(-1) respectively at 200K. If Delta_(r)C_(P) is 20 JK^(-1) mol^(-1) then Delta_(r ) H^(@) at 400K is
Answer» 20kJ/mol 7.98kJ/mol 28kJ/mol none of these Solution :`Delta H_(200K)^(0) = Delta G^(0) + T Delta S^(0)` `= 20 + ((-20) xx 200)/(1000) = 16` kJ/mol `Delta H_(400K)^(0) = (20 xx 200)/(1000) + 16 = 20`