Answered

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Which of the following combinations would form a buffer solution?
a. HF and Lif
b. NH3 and NH4Br
c. HNO2 and NaNO2
d. all of the above
e. none of the above

Sagot :

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Answer:

d . all of the above

Explanation:

A buffer system can be formed in one of two ways:

  • A weak acid and its conjugate base
  • A weak base and its conjugate acid

Which of the following combinations would form a buffer solution?

a. HF and LiF. YES. HF is a weak acid and F⁻ (from LiF) is its conjugate base.

b. NH₃ and NH₄Br. YES. NH₃ is a weak base and NH₄⁺ (from NH₄Br) is its conjugate acid.

c. HNO₂ and NaNO₂. YES. HNO₂ is a weak acid and NO₂⁻ (from NaNO₂) is its conjugate base.

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