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Question: Which of the following reactions leads to the formation of a substance in the colloidal state....

Which of the following reactions leads to the formation of a substance in the colloidal state.

A

Cu+HgCl2CuCl2+Hg\mathrm { Cu } + \mathrm { HgCl } _ { 2 } \rightarrow \mathrm { CuCl } _ { 2 } + \mathrm { Hg }

B

2HNO3+3H2 S3 S+4H2O+2NO2 \mathrm { HNO } _ { 3 } + 3 \mathrm { H } _ { 2 } \mathrm {~S} \rightarrow 3 \mathrm {~S} + 4 \mathrm { H } _ { 2 } \mathrm { O } + 2 \mathrm { NO }

C

2Mg+CO22MgO+C2 \mathrm { Mg } + \mathrm { CO } _ { 2 } \rightarrow 2 \mathrm { MgO } + \mathrm { C }

D

Cu+CuCl2Cu2Cl2\mathrm { Cu } + \mathrm { CuCl } _ { 2 } \rightarrow \mathrm { Cu } _ { 2 } \mathrm { Cl } _ { 2 }

Answer

2HNO3+3H2 S3 S+4H2O+2NO2 \mathrm { HNO } _ { 3 } + 3 \mathrm { H } _ { 2 } \mathrm {~S} \rightarrow 3 \mathrm {~S} + 4 \mathrm { H } _ { 2 } \mathrm { O } + 2 \mathrm { NO }

Explanation

Solution