How many of the following processes have +ve sign for entropy change? (i) Cl_(2(g)) hArr 2Cl_((g)) (ii) S_(8)("rhombic") hArr 4S_(2(g)) (iii) 3O_(2(g)) hArr 2O_(3(g)) (iv) 60C (graphite ) hArr C_(60(s)) (v) Ag_((aq))^(+) + Br_((aq))^(-) hArr AgBr_((s)) + H_(2)O (vi) H_(2)O_((l)) hArr H_(2)O_((s)) (vii) 2NH_(3(g)) hArr N_(2(g)) + 3H_(2(g)) (viii) CuSO_(4(g)) + 5H_(2)O_((l)) hArr CuSO_(4) .5H_(2)O_((s)) (ix) Ba(OH)_(2).10H_(2)O_((s)) + 2NH_(40Cl_((s))) hArr BaCl_(2(s)) + 2NH_(3(g)) + 12H_(2)O_((l))

How many of the following processes have +ve sign for entropy change?

1.	How many of the following processes have +ve sign for entropy change? (i) Cl_(2(g)) hArr 2Cl_((g)) (ii) S_(8)("rhombic") hArr 4S_(2(g)) (iii) 3O_(2(g)) hArr 2O_(3(g)) (iv) 60C (graphite ) hArr C_(60(s)) (v) Ag_((aq))^(+) + Br_((aq))^(-) hArr AgBr_((s)) + H_(2)O (vi) H_(2)O_((l)) hArr H_(2)O_((s)) (vii) 2NH_(3(g)) hArr N_(2(g)) + 3H_(2(g)) (viii) CuSO_(4(g)) + 5H_(2)O_((l)) hArr CuSO_(4) .5H_(2)O_((s)) (ix) Ba(OH)_(2).10H_(2)O_((s)) + 2NH_(40Cl_((s))) hArr BaCl_(2(s)) + 2NH_(3(g)) + 12H_(2)O_((l))
Answer» Solution :(i) `Cl_(2(g)) rarr 2Cl_((g))` (ii) `S_(8)` (rhombic) `rarr 4S_(2(g))` (III) 60C (GRAPHITE) `rarr C_(60(s))` (vii) `2NH_(3(g)) rarr N_(2(g)) + 3H_(2(g))` (ix) `Ba(OH)_(2). 10H_(2)O_((s)) + 2NH_(4)Cl_((s)) rarr Bacl_(2(s)) + 2NH_(3(g)) + 12H_(2)O_((l))`