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200 ml of 0.01 M KMnO4 oxidise 20 ml of H2O2 sample in acidic medium. The volume strength of H2O2 is
  • a)
    2.8 volume
  • b)
    5.6 volume
  • c)
    0.5 volume
  • d)
    0.25 volume
Correct answer is option 'A'. Can you explain this answer?
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200 ml of 0.01 M KMnO4 oxidise 20 ml of H2O2 sample in acidic medium. ...
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200 ml of 0.01 M KMnO4 oxidise 20 ml of H2O2 sample in acidic medium. ...
Calculation

The balanced chemical equation for the reaction between KMnO4 and H2O2 in acidic medium is:

5H2O2 + 2MnO4- + 6H+ → 5O2 + 2Mn2+ + 8H2O

From the equation, we can see that 2 moles of KMnO4 react with 5 moles of H2O2. Therefore, the number of moles of H2O2 in the given sample can be calculated as follows:

Number of moles of H2O2 = (0.01 mol/L) x (0.2 L) x (5/2) = 0.005 mol

The volume strength of H2O2 is defined as the volume of oxygen (measured at STP) that can be liberated from 1 mL of the solution. From the equation, we can see that 5 moles of H2O2 produce 5 moles of O2. Therefore, the volume of oxygen liberated from the given sample can be calculated as follows:

Volume of O2 liberated = (0.005 mol) x (22.4 L/mol) = 0.112 L

The volume strength of H2O2 is then calculated as follows:

Volume strength of H2O2 = (0.112 L) / (0.02 L) = 5.6 volume

Therefore, the correct answer is option A, 2.8 volume.
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200 ml of 0.01 M KMnO4 oxidise 20 ml of H2O2 sample in acidic medium. The volume strength of H2O2 isa)2.8 volumeb)5.6 volumec)0.5 volumed)0.25 volumeCorrect answer is option 'A'. Can you explain this answer?
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200 ml of 0.01 M KMnO4 oxidise 20 ml of H2O2 sample in acidic medium. The volume strength of H2O2 isa)2.8 volumeb)5.6 volumec)0.5 volumed)0.25 volumeCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2025 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about 200 ml of 0.01 M KMnO4 oxidise 20 ml of H2O2 sample in acidic medium. The volume strength of H2O2 isa)2.8 volumeb)5.6 volumec)0.5 volumed)0.25 volumeCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 200 ml of 0.01 M KMnO4 oxidise 20 ml of H2O2 sample in acidic medium. The volume strength of H2O2 isa)2.8 volumeb)5.6 volumec)0.5 volumed)0.25 volumeCorrect answer is option 'A'. Can you explain this answer?.
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