MCQ
Arrange $S,\,O$ and $Se$ in ascending order of electron affinity
- ✓$Se < O < S$
- B$Se < S < O$
- C$S < O < Se$
- D$S < Se < O$
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Reason : In the presence of a more volatile liquid solute, only the solute will form the vapours and solvent will not.
$2 Fe ^{2+}+ H _{2} O _{2} \rightarrow x A + y B$
(in basic medium)
$2 MnO _{4}^{-}+6 H ^{+}+5 H _{2} O _{2} \rightarrow x ^{\prime} C + y ^{\prime} D + z ^{\prime} E$
(in acidic medium)
The sum of the stoichiometric coefficients $x , y , x ^{\prime}, y ^{\prime}$ and $z ^{\prime}$ for products $A , B , C , D$ and $E ,$ respectively, is............