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Number of moles of NaOH needed to neutralise one mole each of H3PO2, H3PO3 and H3PO4 respectively are
- a)3, 3 and 3
- b)1, 2 and 3
- c)2, 2 and 3
- d)2, 1 and 3
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Number of moles of NaOH needed to neutralise one mole each of H3PO2, H...
H3PO2, H3PO3 and H3PO4 are mono, di and tribasic acids respectively.
Most Upvoted Answer
Number of moles of NaOH needed to neutralise one mole each of H3PO2, H...
To determine the number of moles of NaOH needed to neutralize one mole each of H3PO2, H3PO3, and H3PO4, we need to consider the balanced chemical equations for the neutralization reactions.
1. H3PO2 + 2NaOH → Na2HPO2 + 2H2O
2. H3PO3 + 3NaOH → Na3PO3 + 3H2O
3. H3PO4 + 4NaOH → Na4PO4 + 4H2O
From the balanced chemical equations, we can see the following stoichiometric ratios:
1. For every mole of H3PO2, 2 moles of NaOH are needed.
2. For every mole of H3PO3, 3 moles of NaOH are needed.
3. For every mole of H3PO4, 4 moles of NaOH are needed.
Therefore, the correct answer is option 'B': 1 mole of NaOH is needed to neutralize 2 moles of H3PO2, 2 moles of NaOH are needed to neutralize 2 moles of H3PO3, and 3 moles of NaOH are needed to neutralize 3 moles of H3PO4.
This can be summarized as follows:
- H3PO2: 1 mole NaOH
- H3PO3: 2 moles NaOH
- H3PO4: 3 moles NaOH
These ratios are determined by the stoichiometry of the balanced chemical equations, which ensures that the reactants and products are in the correct proportions.
1. H3PO2 + 2NaOH → Na2HPO2 + 2H2O
2. H3PO3 + 3NaOH → Na3PO3 + 3H2O
3. H3PO4 + 4NaOH → Na4PO4 + 4H2O
From the balanced chemical equations, we can see the following stoichiometric ratios:
1. For every mole of H3PO2, 2 moles of NaOH are needed.
2. For every mole of H3PO3, 3 moles of NaOH are needed.
3. For every mole of H3PO4, 4 moles of NaOH are needed.
Therefore, the correct answer is option 'B': 1 mole of NaOH is needed to neutralize 2 moles of H3PO2, 2 moles of NaOH are needed to neutralize 2 moles of H3PO3, and 3 moles of NaOH are needed to neutralize 3 moles of H3PO4.
This can be summarized as follows:
- H3PO2: 1 mole NaOH
- H3PO3: 2 moles NaOH
- H3PO4: 3 moles NaOH
These ratios are determined by the stoichiometry of the balanced chemical equations, which ensures that the reactants and products are in the correct proportions.
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Number of moles of NaOH needed to neutralise one mole each of H3PO2, H3PO3 and H3PO4 respectively area)3, 3 and 3b)1, 2 and 3c)2, 2 and 3d)2, 1 and 3Correct answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Number of moles of NaOH needed to neutralise one mole each of H3PO2, H3PO3 and H3PO4 respectively area)3, 3 and 3b)1, 2 and 3c)2, 2 and 3d)2, 1 and 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Number of moles of NaOH needed to neutralise one mole each of H3PO2, H3PO3 and H3PO4 respectively area)3, 3 and 3b)1, 2 and 3c)2, 2 and 3d)2, 1 and 3Correct answer is option 'B'. Can you explain this answer?.
Number of moles of NaOH needed to neutralise one mole each of H3PO2, H3PO3 and H3PO4 respectively area)3, 3 and 3b)1, 2 and 3c)2, 2 and 3d)2, 1 and 3Correct answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Number of moles of NaOH needed to neutralise one mole each of H3PO2, H3PO3 and H3PO4 respectively area)3, 3 and 3b)1, 2 and 3c)2, 2 and 3d)2, 1 and 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Number of moles of NaOH needed to neutralise one mole each of H3PO2, H3PO3 and H3PO4 respectively area)3, 3 and 3b)1, 2 and 3c)2, 2 and 3d)2, 1 and 3Correct answer is option 'B'. Can you explain this answer?.
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