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  • Which of the following is not an example of a disproportionation reaction?Option: 1 <img alt="\mathrm{P_4 + NaOH \rightarrow PH_3 + NaH_3PO_2}" src="

Which of the following is not an example of a disproportionation reaction?

Option: 1

\mathrm{P_4 + NaOH \rightarrow PH_3 + NaH_3PO_2}


Option: 2

\mathrm{S_8 + NaOH \rightarrow Na_2S + Na_2S_2O_3}


Option: 3

\mathrm{Cl_2 + NaOH \rightarrow NaCl + NaOCl}


Option: 4

\mathrm{Cr_2O_7^{2-}+Cl^-\rightarrow CrCl_3+Cl_2}


Answers (1)

best_answer

In a disproportionation reaction, the same species is oxidized as well reduced.

In (4), Cl- is oxidised to Cl2. It is not a disproportionation  reaction.

Hence, Option(4) is correct.

Posted by

vinayak

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