Select the mixture which is capable of tolerating addition of a strong acid without altering the pH? a.) 1.0 M HCl, 1.0 M NaCl b.) 1.0 M NH3

Question

Select the mixture which is capable of tolerating addition of a strong acid without altering the pH? a.) 1.0 M HCl, 1.0 M NaCl b.) 1.0 M NH3,1.0 M NaCl c.) 1.0 M HF, 1.0 M NaCl d.) 1.0 M HNO2, 1.0 M NaNO2 e.) none

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Mộc Miên 5 months 2021-08-11T10:56:24+00:00 1 Answers 58 views 0

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    2021-08-11T10:57:59+00:00

    Answer:

    d.) 1.0 M HNO2, 1.0 M NaNO2

    Explanation:

    A buffer is a mixture that is capable of tolerating addition of a strong acid or base without altering the pH substantially.

    A buffer is the mixture of a WEAK ACID AND ITS CONJUGATE BASE or a WEAK BASE AND ITS CONJUGATE ACID

    In the problems:

    a) HCl is a strong acid and NaCl a salt. NO buffer

    b) NH3 is a weak base and NaCL a salt. NO buffer

    c) HF is a weak acid and NaCl a salt. NO buffer.

    d) HNO2 is a weak acid and NaNO2 its conjugate base. A BUFFER

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