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Only One Option Correct Type
This section contains 16 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct
Q.
During the electrolysis of aqueous Zn(NO3)2 solution
- a)Zn plates out at the cathode
- b)Zn plates out at the anode
- c)H2 gas is evolved at the anode
- d)O2 gas is evolved at the anode
Correct answer is option 'D'. Can you explain this answer?
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Only One Option Correct TypeThis section contains 16multiple choice qu...
In preference to reduction of Zn2+ at cathode, O2- (aq) is oxidised to O2 at anode.
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Only One Option Correct TypeThis section contains 16multiple choice qu...
Electrolysis of Aqueous Zn(NO3)2 Solution
Electrolysis is a process in which an electric current is passed through a solution containing ions, causing the ions to undergo oxidation or reduction reactions. Aqueous solutions of zinc nitrate (Zn(NO3)2) can be electrolyzed to separate the constituent ions.
Option A: Zn plates out at the cathode
- Zinc ions (Zn2+) are positively charged and would be attracted to the negative cathode during electrolysis.
- However, in an aqueous solution containing nitrate ions (NO3-), the nitrate ions are more likely to undergo reduction at the cathode than the zinc ions.
- Therefore, zinc metal does not plate out at the cathode.
Option B: Zn plates out at the anode
- Zinc metal is a solid and cannot plate out at the anode, which is the positive electrode.
Option C: H2 gas is evolved at the anode
- Water (H2O) is present in the aqueous solution and can undergo electrolysis at the anode, producing oxygen gas (O2) and hydrogen gas (H2).
- However, in the presence of nitrate ions, the nitrate ions are more likely to undergo oxidation at the anode than the water molecules.
- Therefore, hydrogen gas does not evolve at the anode.
Option D: O2 gas is evolved at the anode
- As mentioned earlier, the presence of nitrate ions in the aqueous solution favors their oxidation at the anode.
- Nitrate ions (NO3-) can be oxidized to form oxygen gas (O2) and nitrogen dioxide gas (NO2).
- Therefore, option D is the correct answer.
Electrolysis is a process in which an electric current is passed through a solution containing ions, causing the ions to undergo oxidation or reduction reactions. Aqueous solutions of zinc nitrate (Zn(NO3)2) can be electrolyzed to separate the constituent ions.
Option A: Zn plates out at the cathode
- Zinc ions (Zn2+) are positively charged and would be attracted to the negative cathode during electrolysis.
- However, in an aqueous solution containing nitrate ions (NO3-), the nitrate ions are more likely to undergo reduction at the cathode than the zinc ions.
- Therefore, zinc metal does not plate out at the cathode.
Option B: Zn plates out at the anode
- Zinc metal is a solid and cannot plate out at the anode, which is the positive electrode.
Option C: H2 gas is evolved at the anode
- Water (H2O) is present in the aqueous solution and can undergo electrolysis at the anode, producing oxygen gas (O2) and hydrogen gas (H2).
- However, in the presence of nitrate ions, the nitrate ions are more likely to undergo oxidation at the anode than the water molecules.
- Therefore, hydrogen gas does not evolve at the anode.
Option D: O2 gas is evolved at the anode
- As mentioned earlier, the presence of nitrate ions in the aqueous solution favors their oxidation at the anode.
- Nitrate ions (NO3-) can be oxidized to form oxygen gas (O2) and nitrogen dioxide gas (NO2).
- Therefore, option D is the correct answer.
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Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer?
Question Description
Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer?.
Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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Here you can find the meaning of Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Only One Option Correct TypeThis section contains 16multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correctQ. During the electrolysis of aqueous Zn(NO3)2 solutiona)Zn plates out at the cathodeb)Zn plates out at the anodec)H2 gas is evolved at the anoded)O2gas is evolved at the anodeCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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