When the ion ${\rm{C}}{{\rm{r}}_2}{\rm{O}}_7^{2 - }$ acts as an oxidant in acidic aqueous solution the ion ${\rm{C}}{{\rm{r}}^{3 + }}\,{\rm{is}}\,{\rm{formed}}.$. How many mole of ${\rm{S}}{{\rm{n}}^{2 + }}$) would be oxidised to ${\rm{S}}{{\rm{n}}^{4 + }}$ by one of ${\rm{C}}{{\rm{r}}_2}{\rm{O}}_7^{2 - }$ ions?

NEET UG CHEMISTRY MCQ: REDOX REACTIONS

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When the ion

\mathrm{C}{\mathrm{r}_2}\mathrm{O}_7^{2 - }

acts as an oxidant in acidic aqueous solution the ion

\mathrm{C}{\mathrm{r}^{3 + }}\,\mathrm{is}\,\mathrm{formed}.

. How many mole of

\mathrm{S}{\mathrm{n}^{2 + }}

) would be oxidised to

\mathrm{S}{\mathrm{n}^{4 + }}

by one of

\mathrm{C}{\mathrm{r}_2}\mathrm{O}_7^{2 - }

ions?

View answer and explanation

Correct option: D

Option D (3) is correct because each dichromate ion gains 6 electrons, while each tin(II) ion loses 2 electrons, requiring 3 tin(II) ions per dichromate ion.

NEET UG CHEMISTRY MCQ: REDOX REACTIONS

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