Chemistry, 18.10.2019 12:00, AADJ4

The chemical equation for a reaction between k2cr2o7 and hcl is shown. k2cr2o7 + 14hcl → 2crcl3 + 2kcl + 3cl2 + 7h2o
which of the following identifies the reactant that acts as an oxidizing agent in the reaction and explains the answer? 20 !

a. k2cr2o7, because the oxidation number of k changes from +6 to +3.
b. k2cr2o7, because the oxidation number of cr changes from +6 to +3.
c. hcl, because the oxidation number of h changes from −1 to 0.
d. hcl, because the oxidation number of cl changes from −1 to 0.

Answers: 2

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The chemical equation for a reaction between k2cr2o7 and hcl is shown. k2cr2o7 + 14hcl → 2crcl3 + 2k...