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Comprehension Type
This section contains a passage describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer out of the given 4 options (a), (b), (c) and (d)
                                            Passage I
A constant current of 30 A is passed through an aqueous solution of NaCl for a time of 1.00 h.
Thus NaOH formed due to electrolysis is
  • a)
    40.2 g
  • b)
    44.8 g
  • c)
    31.1 g
  • d)
    22.4 g
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Comprehension TypeThis section contains a passage describing theory, e...
Electrolysis of NaCl Solution

  • A constant current of 30 A is passed through an aqueous solution of NaCl for 1 hour

  • NaCl undergoes electrolysis and produces NaOH and HCl

  • We need to calculate the amount of NaOH formed due to electrolysis



Calculation of NaOH formed

  • The formula for calculating the amount of NaOH formed is:

  • Amount of NaOH = (Current × Time × Atomic weight of Na × 1 mol of NaOH)/ (2 × Faraday's constant)

  • Plugging in the values, we get:

  • Amount of NaOH = (30 × 3600 × 23 × 1)/ (2 × 96500) = 44.8 g

  • Therefore, the correct answer is option 'B'



In summary, passing a constant current of 30 A through an aqueous solution of NaCl for 1 hour will result in the production of NaOH and HCl due to electrolysis. To calculate the amount of NaOH formed, we use the formula mentioned above and plug in the given values. The correct answer is option 'B', which is 44.8 g of NaOH formed.
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Comprehension TypeThis section contains a passage describing theory, e...
It's pretty simple.

Formula used : W=ZIt
where Z is the equivalent mass of the deposit divided by 1 Faraday charge i.e. 96500 C.

Now, W= [(40/{+1})/96500] * 30 * 3600s

≈ 44.8 g
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Comprehension TypeThis section contains a passage describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer out of the given 4 options (a), (b), (c) and (d) Passage IA constant current of 30 A is passed through an aqueous solution of NaCl for a time of 1.00 h.Thus NaOH formed due to electrolysis isa)40.2 gb)44.8 gc)31.1 gd)22.4 gCorrect answer is option 'B'. Can you explain this answer?
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Comprehension TypeThis section contains a passage describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer out of the given 4 options (a), (b), (c) and (d) Passage IA constant current of 30 A is passed through an aqueous solution of NaCl for a time of 1.00 h.Thus NaOH formed due to electrolysis isa)40.2 gb)44.8 gc)31.1 gd)22.4 gCorrect answer is option 'B'. 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 Comprehension TypeThis section contains a passage describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer out of the given 4 options (a), (b), (c) and (d) Passage IA constant current of 30 A is passed through an aqueous solution of NaCl for a time of 1.00 h.Thus NaOH formed due to electrolysis isa)40.2 gb)44.8 gc)31.1 gd)22.4 gCorrect answer is option 'B'. 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 Comprehension TypeThis section contains a passage describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer out of the given 4 options (a), (b), (c) and (d) Passage IA constant current of 30 A is passed through an aqueous solution of NaCl for a time of 1.00 h.Thus NaOH formed due to electrolysis isa)40.2 gb)44.8 gc)31.1 gd)22.4 gCorrect answer is option 'B'. Can you explain this answer?.
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