1.

For which reaction change of entropy will be positive

Answer»

`H_(2(G))+I_(2(g))iff2HI_((g))`
`HCl_((g))+NH_(3(g))iffNH_(4)Cl_((s))`
`NH_(4)NO_(3(s))iff N_(2)O_((g))+2H_(2)O_((g))`
`MgO_((s))+H_(2(g))iffMg_((s))+H_(2)O_((l))`

Solution :Entropy of gas is greater than that of liquid and solid. In OPTION (c ) solid is converted into gaseous phase.
Entropy of gas `GT` liquid `gt` solid.


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