Question

Which of the following are reduction half-reactions? (Select all that apply)a) S2O3^2- --> S4O6^2-b) C2O4^2- --> CO3^2-C) NO3- --> NOd) Cl2 --> Cl -e) Al --> Al^3+f) Cr2O7^2- --> Cr^3+

Answer 1

ANSWER

OPTION C

STEP-BY-STEP EXPLANATION:

$NO^{3-}\text{ }\rightarrow\text{ NO}$

The above reaction is an example of a reduction half-reaction. This is because NO^3- is reduced to NO.

The remaining options are examples of oxidation half reactions