When electricity is passed through water in the presence of an acid, oxygen and _ are produced.
Correct answer: D. Hydrogen
- A. Carbon
- B. CO
- C. CO2
- D. Hydrogen
Explanation
When electric current is passed through water, water dissociates into hydrogen and oxygen. Hydrogen is deposited over the negative pole and oxygen is deposited over the positive pole. Deposition of hydrogen and oxygen at different poles is visible in the form of bubbles.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Electrochemistry
Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
Practise Electrochemistry
696 free Electrochemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electrochemistry questions
In the following reaction: 3Br2 +6CO32- + 3H2O → 5Br-1 + BrO3-1 + 6HCO3-1
The reaction: Cl2 + H2O → HCl + HOCl is an example of:
The oxidation number of all the elements in the free state is:
In electrochemical series, elements are arranged in order of their standard electrode potentials, the correct decreasing reactivity order for metals is:
The oxidation state of "S' in the (S2O3)-2 is:
The common oxidation number of halogens is: