During electrolysis, reduction always occurs at:
Correct answer: B. Cathode
- A. Anode
- B. Cathode
- C. SHE
- D. Salt bridge
Explanation
Reduction happens at the negative cathode because this is where positive ions gain electrons. Oxidation happens at the positive anode because this is where negative ions lose electrons.
Last updated
About Oxidation and Reduction
Oxidation involves loss of electrons, increase in oxidation number or addition of oxygen, while reduction involves electron gain, decrease in oxidation number or removal of oxygen. The topic covers oxidising and reducing agents, oxidation-number changes, redox equations and the distinction between oxidation at the anode and reduction at the cathode.
Practise Electrochemistry
696 free Electrochemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
6NaOH + 3Cl2 ----> 5NaCl + NaClO3+3H2OIn the above disproportion reaction, the oxidation state of chlorine is changed from zero to _ and _.
A metallic atom loses its valence electron to form a/an _________?
An oxidising agent is a substance that
Apparent charge on atom in molecule is___________________?
Bosch Process involves _______?