Calculate DeltaS_(r)^(@) at298 K of ,(i) Na(s) +(1)/(2)CL_(2)(g) to NaCl(s), (ii) (1)/(2) N_(2)(s) + 2H _(2)(g) +(1)/(2) Cl_(2)(g) to NH_(4) Cl(s)(iii)C(graphite)to C( diamond). The values of S^(@) ofNa, Cl_(2), NaCl, NH_(4) Cl, N_(2), H_(2),"diamond& graphite are" 51, 223,72,95 ,192,131, 2.43 & 5.69 JK^(-1)mol^(-1)respectively .

Calculate DeltaS_(r)^(@) at298 K of ,(i) Na(s) +(1)/(2)CL_(2)(g) to Na

1.	Calculate DeltaS_(r)^(@) at298 K of ,(i) Na(s) +(1)/(2)CL_(2)(g) to NaCl(s), (ii) (1)/(2) N_(2)(s) + 2H _(2)(g) +(1)/(2) Cl_(2)(g) to NH_(4) Cl(s)(iii)C(graphite)to C( diamond). The values of S^(@) ofNa, Cl_(2), NaCl, NH_(4) Cl, N_(2), H_(2),"diamond& graphite are" 51, 223,72,95 ,192,131, 2.43 & 5.69 JK^(-1)mol^(-1)respectively .
Answer» Solution :`(DeltaS)_(R)= sum(S^(@))_("Product")-sum(S^(@))_("Reactants")` (i) `""DeltaS = 72 - [51+(223)/(2)]` `= - 90.5 J K^(-1) "Mole"^(-1)`(ii) `""(DeltaS^(@))_(R) = - 374.5 J//K-"Mole"` (III) `""(DeltaS^(@))_(R) = - 3.26 J//K-"Mole"`