Which of the following ionic/molecular species does not disproportionate in water at room temperature?

Options

A. `NO_(2)`
B. `Cu^(+)`
C. `MnO_(4)^(2-)`
D. `Ca(OCl)Cl`

Answer

D

Explanation

`2NO_(2)+H_(2)O to HNO_(3)+HNO_(2) underset("dispn. Rn.")overset(R.T.)to HNO_(3)+NO`
`2Cu^(+)(aq.) overset(R.T.)toCu+Cu^(2+)(aq.)`
`3overset(+6)(M)nO_(4)^(2-)(aq.)underset("dispn. Rn.")overset(R.T.)to 2overset(+7)(M)nO_(4)^(-)(aq.)+overset(+4)(M)nO_(2)+4OH^(-)`
`Ca(OCl)Cl overset(water)to Ca^(2+)(aq.)+Cl^(-)(aq.)+OCl^(-)(aq.)`