Question

In the following equation, ______ is being oxidized and ______ is being reduced.

CO3 2- + 2H+ → CO2 + H2O

A. None of these
B. carbon, oxygen
C. carbon, hydrogen
D. hydrogen, carbon

Answer 1

D

Step-by-step explanation:

I believe that is the answer

Answer 2

`oxidation \: number \: of \: oxygen = \\ before \: rxn = - 2 \\ after \: rxn = - 2`

`oxidation \: number \: of \: hydrogen = \\ before \: rxn = + 1 \\ after \: rxn = \\ 2x - 2 = 0 \\ x = + 1`

`oxidation \: number \: of \: carbon = \\ before \: rxn = \\ x - 6 = - 2 \\ x = 4 \\ after \: rxn = \\ x - 4 = 0 \\ x = 4`

Option A

`oxidation \: numbers \: remain \: constant \\ so \: none \:a re \: undergoing \: oxidation \: \\ nor \: reduction \:`