Question #9d1d8

1 Answer
Stefan V.
Oct 4, 2015

One option is manganese dioxide.

Explanation:

To be able to produce chlorine gas, #"Cl"_2#, from hydrochloric acid, #"HCl"#, you need to use an oxidizing agent capable of oxidizing chlorine from a #color(blue)(-1)# oxidation state, which it has in hydrochloric acid, to a #color(blue)(0)# oxidation state, which it has in chlorine gas.

#"H" stackrel(color(blue)(-1))("Cl") -> stackrel(color(blue)(0))("Cl"_2)#

One oxidizing agent that can help you get chlorine gas from hydrochloric acid is manganese dioxide, #"MnO"_2#.

#"MnO"_text(2(s]) + 4"HCl"_text((aq]) -> "MnCl"_text(2(aq]) + "Cl"_text(2(g]) uarr + 2"H"_2"O"_text((l])#

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