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KVPY2020ChemistryHydrogen

Strength of a H 2 O 2 solution is labeled as 1 . 79   N . Its strength can also be expressed as closest to

Options

  1. A20 volume
  2. B5 volume
  3. C10 volume
  4. D15 volume

Correct answer

C. 10 volume

Step-by-step solution

2 H 2 O 2 aq . ⟶ 2 H 2 O ℓ + O 2 g General Solution :- It is a common trend that n -factor H 2 O 2 is taken as ' 2 ' By the definition of volume strength of H 2 O 2 if we consume 1 ℓ of 1   N   H 2 O 2 in the above equation we are using 1 gram equivalent of H 2 O 2 ≡ 0 . 5 moles of H 2 O 2 (by using n -factor = 2 ) This will produce 1 4 moles of O 2 gas at N . T . P . ≡ 1 4 × 22 . 4 = 5 . 6 ℓ of O 2 gas i.e. 1 ℓ , 1   N   H 2 O 2 solution g

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