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Which of the following pairs constitutes a buffer?

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Which of the following pairs constitutes a buffer?

(a) HCl and KCl

(b) HNO2 and NaNO2

(c) NaOH and NaCl

(d) HNO3 and NH4NO3

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1 Answer

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Best answer

The correct option is: (b) HNO2 and NaNO2

Explanation:

HNO2 and NaNO2 are examples of acidic buffer.

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