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ChemistryChemistry
1 October, 01:24

Sodium thiosulphate solution turn cloudy when it reacts with nitric acid:

a. Due to the formation NaNO3

b. Due to the evolution of SO2 gas

c. Due to the formation of S.

d. None of the above.

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Answers (1)
  1. 1 October, 03:36
    0
    Answer:The solution turn cloudy due to the formation of elemental sulphur as precipitate.

    Explanation:

    Nitric acid is a very good oxidizing agent and it oxidizes sodium thiosulphate

    into sodium sulphate.

    The following reaction takes place when nitric acid reacts with sodium thiosulphate.

    Na₂S₂O₃+2HNO₃→Na₂SO₄+S+2NO₂+H₂O

    On reaction of sodium thiosulphate with nitric acid the following products are obtained:

    1. Sodium sulphate (Na₂SO₄)

    2. Precipitate of elemental sulphur (S)

    3. Nitrogen dioxide (NO₂)

    4. water molecule (H₂O)

    The overall solution turns cloudy because of the formation of elemental sulphur as precipitate.
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Home » Chemistry » Sodium thiosulphate solution turn cloudy when it reacts with nitric acid: a. Due to the formation NaNO3 b. Due to the evolution of SO2 gas c. Due to the formation of S. d. None of the above.
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