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5 May, 19:34

Which of the following mixtures can be a buffer? Group of answer choices ammonia and ammonium acetate potassium nitrate and nitric acid potassium nitrite and nitrous acid sodium chloride and hypochlorous acid

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  1. 5 May, 23:26
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    Ammonia and ammonium acetate

    Potassium nitrite and nitrous acid

    Explanation:

    A buffer system must be formed of:

    A weak base and its conjugate acid, or A weak acid and its conjugate base.

    Which of the following mixtures can be a buffer?

    Ammonia and ammonium acetate. YES. Ammonia is a weak base and ammonium is its conjugate acid. Potassium nitrate and nitric acid. NO. Nitric acid is a strong acid. Potassium nitrite and nitrous acid. YES. Nitrous acid is a weak acid and nitrite is its conjugate base. Sodium chloride and hypochlorous acid. NO. Hypochlorous acid is a weak acid but its conjugate base is missing.
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