a. Cl2
b. HCl
c. H2O
d. K2Cr2O7
It's the K2Cr207. Think about it this way, the oxidising agent is always the substance getting reduced and the reducing agent is the substance getting oxidised
d. K2Cr2O7 as oxidation number of Cr reduce from +6 to +3
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It's the K2Cr207. Think about it this way, the oxidising agent is always the substance getting reduced and the reducing agent is the substance getting oxidised
d. K2Cr2O7 as oxidation number of Cr reduce from +6 to +3