\(\mathrm{\mathrm{O}}\) in \(\mathrm{\mathrm{OsO}_{4}, \mathrm{Ru}}\) in \(\mathrm{\mathrm{RuO}_{4}}\) and \(\mathrm{\mathrm{Xe}}\) in \(\mathrm{\mathrm{XeO}_{6}^{-4}}\) shows a maximum oxidation state of +8 .
CHXI08:REDOX REACTIONS
315211
In the reaction, \({\rm{MnO}}_{\rm{4}}^{{\rm{ - 1}}}{\rm{(aq) + B}}{{\rm{r}}^{{\rm{ - 1}}}}{\rm{(aq)}} \to {\rm{Mn}}{{\rm{O}}_{\rm{2}}}{\rm{(\;s) + BrO}}_{\rm{3}}^{{\rm{ - 1}}}{\rm{(aq),}}\) the correct change in oxidation number of the species invovled is
1 \(\mathrm{\mathrm{Br}^{+5}}\) to \(\mathrm{\mathrm{Br}^{-1}}\)
2 \(\mathrm{\mathrm{Mn}^{+7}}\) to \(\mathrm{\mathrm{Mn}^{+2}}\)
3 \(\mathrm{\mathrm{Mn}^{+7}}\) to \(\mathrm{\mathrm{Mn}^{+3}}\)
4 \(\mathrm{\mathrm{Br}^{-1}}\) to \(\mathrm{\mathrm{Br}^{+5}}\)
Explanation:
\(\mathrm{\mathrm{MnO}_{4}^{-1}(\mathrm{aq})+\mathrm{Br}^{-1}(\mathrm{aq}) \longrightarrow}\) \(\mathop {{\rm{Mn}}}\limits^{{\rm{ + 4}}} {{\rm{O}}_{\rm{2}}}{\rm{(\;s) + }}\mathop {{\rm{Br}}}\limits^{{\rm{ + 5}}} {\rm{O}}_{\rm{3}}^{{\rm{ - 1}}}{\rm{(aq)}}\) In the above reaction, oxidation number of \(\mathrm{\mathrm{Mn}}\) in \(\mathrm{\mathrm{MnO}_{4}^{-1}(\mathrm{aq})}\) decreases from +7 to +4 in \(\mathrm{\mathrm{MnO}_{2}(\mathrm{~s})}\) and oxidation number of \(\mathrm{\mathrm{Br}}\) increase from \({\rm{ - 1}}\) (in \(\mathrm{\mathrm{Br}^{-}}\)(aq) to +5 (in \(\mathrm{\mathrm{BrO}_{3}^{-1}(\mathrm{aq})}\) ). Thus, the correct option is (4).
MHTCET - 2019
CHXI08:REDOX REACTIONS
315212
In which of the following compounds, iron has the lowest oxidation state?
\(\mathrm{\mathrm{O}}\) in \(\mathrm{\mathrm{OsO}_{4}, \mathrm{Ru}}\) in \(\mathrm{\mathrm{RuO}_{4}}\) and \(\mathrm{\mathrm{Xe}}\) in \(\mathrm{\mathrm{XeO}_{6}^{-4}}\) shows a maximum oxidation state of +8 .
CHXI08:REDOX REACTIONS
315211
In the reaction, \({\rm{MnO}}_{\rm{4}}^{{\rm{ - 1}}}{\rm{(aq) + B}}{{\rm{r}}^{{\rm{ - 1}}}}{\rm{(aq)}} \to {\rm{Mn}}{{\rm{O}}_{\rm{2}}}{\rm{(\;s) + BrO}}_{\rm{3}}^{{\rm{ - 1}}}{\rm{(aq),}}\) the correct change in oxidation number of the species invovled is
1 \(\mathrm{\mathrm{Br}^{+5}}\) to \(\mathrm{\mathrm{Br}^{-1}}\)
2 \(\mathrm{\mathrm{Mn}^{+7}}\) to \(\mathrm{\mathrm{Mn}^{+2}}\)
3 \(\mathrm{\mathrm{Mn}^{+7}}\) to \(\mathrm{\mathrm{Mn}^{+3}}\)
4 \(\mathrm{\mathrm{Br}^{-1}}\) to \(\mathrm{\mathrm{Br}^{+5}}\)
Explanation:
\(\mathrm{\mathrm{MnO}_{4}^{-1}(\mathrm{aq})+\mathrm{Br}^{-1}(\mathrm{aq}) \longrightarrow}\) \(\mathop {{\rm{Mn}}}\limits^{{\rm{ + 4}}} {{\rm{O}}_{\rm{2}}}{\rm{(\;s) + }}\mathop {{\rm{Br}}}\limits^{{\rm{ + 5}}} {\rm{O}}_{\rm{3}}^{{\rm{ - 1}}}{\rm{(aq)}}\) In the above reaction, oxidation number of \(\mathrm{\mathrm{Mn}}\) in \(\mathrm{\mathrm{MnO}_{4}^{-1}(\mathrm{aq})}\) decreases from +7 to +4 in \(\mathrm{\mathrm{MnO}_{2}(\mathrm{~s})}\) and oxidation number of \(\mathrm{\mathrm{Br}}\) increase from \({\rm{ - 1}}\) (in \(\mathrm{\mathrm{Br}^{-}}\)(aq) to +5 (in \(\mathrm{\mathrm{BrO}_{3}^{-1}(\mathrm{aq})}\) ). Thus, the correct option is (4).
MHTCET - 2019
CHXI08:REDOX REACTIONS
315212
In which of the following compounds, iron has the lowest oxidation state?
\(\mathrm{\mathrm{O}}\) in \(\mathrm{\mathrm{OsO}_{4}, \mathrm{Ru}}\) in \(\mathrm{\mathrm{RuO}_{4}}\) and \(\mathrm{\mathrm{Xe}}\) in \(\mathrm{\mathrm{XeO}_{6}^{-4}}\) shows a maximum oxidation state of +8 .
CHXI08:REDOX REACTIONS
315211
In the reaction, \({\rm{MnO}}_{\rm{4}}^{{\rm{ - 1}}}{\rm{(aq) + B}}{{\rm{r}}^{{\rm{ - 1}}}}{\rm{(aq)}} \to {\rm{Mn}}{{\rm{O}}_{\rm{2}}}{\rm{(\;s) + BrO}}_{\rm{3}}^{{\rm{ - 1}}}{\rm{(aq),}}\) the correct change in oxidation number of the species invovled is
1 \(\mathrm{\mathrm{Br}^{+5}}\) to \(\mathrm{\mathrm{Br}^{-1}}\)
2 \(\mathrm{\mathrm{Mn}^{+7}}\) to \(\mathrm{\mathrm{Mn}^{+2}}\)
3 \(\mathrm{\mathrm{Mn}^{+7}}\) to \(\mathrm{\mathrm{Mn}^{+3}}\)
4 \(\mathrm{\mathrm{Br}^{-1}}\) to \(\mathrm{\mathrm{Br}^{+5}}\)
Explanation:
\(\mathrm{\mathrm{MnO}_{4}^{-1}(\mathrm{aq})+\mathrm{Br}^{-1}(\mathrm{aq}) \longrightarrow}\) \(\mathop {{\rm{Mn}}}\limits^{{\rm{ + 4}}} {{\rm{O}}_{\rm{2}}}{\rm{(\;s) + }}\mathop {{\rm{Br}}}\limits^{{\rm{ + 5}}} {\rm{O}}_{\rm{3}}^{{\rm{ - 1}}}{\rm{(aq)}}\) In the above reaction, oxidation number of \(\mathrm{\mathrm{Mn}}\) in \(\mathrm{\mathrm{MnO}_{4}^{-1}(\mathrm{aq})}\) decreases from +7 to +4 in \(\mathrm{\mathrm{MnO}_{2}(\mathrm{~s})}\) and oxidation number of \(\mathrm{\mathrm{Br}}\) increase from \({\rm{ - 1}}\) (in \(\mathrm{\mathrm{Br}^{-}}\)(aq) to +5 (in \(\mathrm{\mathrm{BrO}_{3}^{-1}(\mathrm{aq})}\) ). Thus, the correct option is (4).
MHTCET - 2019
CHXI08:REDOX REACTIONS
315212
In which of the following compounds, iron has the lowest oxidation state?
\(\mathrm{\mathrm{O}}\) in \(\mathrm{\mathrm{OsO}_{4}, \mathrm{Ru}}\) in \(\mathrm{\mathrm{RuO}_{4}}\) and \(\mathrm{\mathrm{Xe}}\) in \(\mathrm{\mathrm{XeO}_{6}^{-4}}\) shows a maximum oxidation state of +8 .
CHXI08:REDOX REACTIONS
315211
In the reaction, \({\rm{MnO}}_{\rm{4}}^{{\rm{ - 1}}}{\rm{(aq) + B}}{{\rm{r}}^{{\rm{ - 1}}}}{\rm{(aq)}} \to {\rm{Mn}}{{\rm{O}}_{\rm{2}}}{\rm{(\;s) + BrO}}_{\rm{3}}^{{\rm{ - 1}}}{\rm{(aq),}}\) the correct change in oxidation number of the species invovled is
1 \(\mathrm{\mathrm{Br}^{+5}}\) to \(\mathrm{\mathrm{Br}^{-1}}\)
2 \(\mathrm{\mathrm{Mn}^{+7}}\) to \(\mathrm{\mathrm{Mn}^{+2}}\)
3 \(\mathrm{\mathrm{Mn}^{+7}}\) to \(\mathrm{\mathrm{Mn}^{+3}}\)
4 \(\mathrm{\mathrm{Br}^{-1}}\) to \(\mathrm{\mathrm{Br}^{+5}}\)
Explanation:
\(\mathrm{\mathrm{MnO}_{4}^{-1}(\mathrm{aq})+\mathrm{Br}^{-1}(\mathrm{aq}) \longrightarrow}\) \(\mathop {{\rm{Mn}}}\limits^{{\rm{ + 4}}} {{\rm{O}}_{\rm{2}}}{\rm{(\;s) + }}\mathop {{\rm{Br}}}\limits^{{\rm{ + 5}}} {\rm{O}}_{\rm{3}}^{{\rm{ - 1}}}{\rm{(aq)}}\) In the above reaction, oxidation number of \(\mathrm{\mathrm{Mn}}\) in \(\mathrm{\mathrm{MnO}_{4}^{-1}(\mathrm{aq})}\) decreases from +7 to +4 in \(\mathrm{\mathrm{MnO}_{2}(\mathrm{~s})}\) and oxidation number of \(\mathrm{\mathrm{Br}}\) increase from \({\rm{ - 1}}\) (in \(\mathrm{\mathrm{Br}^{-}}\)(aq) to +5 (in \(\mathrm{\mathrm{BrO}_{3}^{-1}(\mathrm{aq})}\) ). Thus, the correct option is (4).
MHTCET - 2019
CHXI08:REDOX REACTIONS
315212
In which of the following compounds, iron has the lowest oxidation state?
