Question

Which of the following reaction is possible at anode?
(a) 2Cr³⁺ + 7H₂O → Cr₂O₇²⁻ + 14H⁺
(b) F₂ → 2F⁻
(c) (1/2) O₂ + 2H⁺ → H₂O
(d) None of these.

Answer 1

Answer: is ( c) bcz anode is negt so it will attract cation

Answer 2

2Cr³⁺ + 7H₂O → Cr₂O₇²⁻ + 14H⁺ is the reaction possible at anode.

Explanation:

• Oxidation is the losses an electron occurs as it is anode. The negative electrode in the galvanic cell as oxidation occurs, behind the electrode the electrons are left.
• Reduction is the gain of an electron occurs as it is cathode. The positive electrode in the galvanic cell oxidation occurs lesser, few ions go through solution, and some electron left on the electrode.

                   2Cr³⁺ + 7H₂O → Cr₂O₇²⁻ + 14H⁺

• Oxidation state is oxidized in Cr which changes from (+3 to +6) though the reaction is anode.

To learn more;

1. https://brainly.in/question/308932
2. https://brainly.in/question/3046049