MCQ
Manganese $(VI)$ has ability to disproportionate in acidic solution. The difference in oxidation states of two ions it forms in acidic solution is $...... .$
- ✓$3$
- B$2$
- C$1$
- D$4$
✓
Answer
Correct option: A.
$3$
a
$MnO _{4}^{2-}$ disproportionates in a neutral or acidic solution to give $MnO _{4}^{-}$and $Mn ^{+4}$
$MnO _{4}^{2-}$ disproportionates in a neutral or acidic solution to give $MnO _{4}^{-}$and $Mn ^{+4}$
$3 MnO _{4}^{2-}+3 H ^{+} \longrightarrow 2 MnO _{4}^{-}+ MnO _{2}+2 H _{2} O$
O.S. of $Mn$ in $MnO _{4}^{-}=+7$
O.S. of $Mn$ in $MnO _{2}=+4$
$\text { difference }=3$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
On hydrolysis, which of the following carbohydrate give glucose only ?
A student determined the value of the rate constant, $k$ , for a chemical reaction at several different temperature. Which of the following graphs of the student's data would give a straight line ?
→Correct order for reaction with alcoholic $KOH$
→Glacial acetic is obtained by
The co$-$ordination number of a metal in co$-$ordination compound is:
→Which one of the following statements is not true
In case of osmosis solvent molecules move from
Thiamine and pyridoxine are also known respectively as :
Correct statement regarding molecules $SF_4,\, CF_4$ and $XeF_4$ are
→Faraday's 2nd law states that mass deposited on the electrode is directly proportional to