A 1M solution is made of each item in a pair. When would this combination create a buffer? Chose the pairs below that you could use to make

Question

A 1M solution is made of each item in a pair. When would this combination create a buffer? Chose the pairs below that you could use to make a buffered solution.

a. HCI/NaOH
b. HCOOH/ NaHCOO
c. HNO2/H2SO3
d. NaNO3/ HNO3

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Calantha 1 week 2021-07-22T22:08:27+00:00 1 Answers 0 views 0

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    2021-07-22T22:09:33+00:00

    Answer:

    b. HCOOH/ NaHCOO.

    Explanation:

    A buffer system may be formed in one of two forms:

    • A weak acid with its conjugate base.
    • A weak base with its conjugate acid.

    Chose the pairs below that you could use to make a buffered solution.

    a. HCI/NaOH. NO. HCl is a strong acid and NaOH is a strong base.

    b. HCOOH/ NaHCOO. YES. HCOOH is a weak acid and HCOO⁻ (coming from NaHCOO) is its conjugate base.

    c. HNO₂/H₂SO₃. NO. Both are acids and they are unrelated to each other.

    d. NaNO₃/ HNO₃. NO. HNO₃ is a strong acid.

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