MCQ
The total entropy change for a system and its surroundings increases, if the process is
- AReversible
- BIrreversible
- CExothermic
- ✓Endothermic
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$(i)$ benzene $(ii)$ toluene
$(iii)$ chlorobenzene $(iv)$ phenol
$xMnO_4^ - \, + \,y{C_2}O_4^{2 - }\, + \,z{H^ + }\, \rightarrow $$\,xM{n^{2 + }} + 2yC{O_2} + \frac{z}{2}{H_2}O$
The value's of $x, y$ and $z$ in the reaction are, respectively :