text 6 in the reaction equation mathrmcomathrms2 mathrmhcl_text aq rig
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\text { 6. In the reaction equation } \mathrm{Co}(\mathrm{s})+2 \mathrm{HCl}_{\text {(aq) }} \rightarrow \mathrm{CoCl}_{2(\mathrm{aq})}+\mathrm{H}_{2(\mathrm{~g})} a. Chloride is oxidized b. Hydrogen is reduced C. Hydrogen is oxidized d. Cobalt is reduced