A weak acid is titrated with 0.1236 M NaOH. From the titration curve you determine that the equivalence point occurs after exactly 12.42 mL

Question

A weak acid is titrated with 0.1236 M NaOH. From the titration curve you determine that the equivalence point occurs after exactly 12.42 mL of NaOH have been added. What is the volume of NaOH at the half-equivalence point (a.k.a. the midpoint)

in progress 0
Thạch Thảo 6 months 2021-07-15T22:32:39+00:00 1 Answers 7 views 0

Answers ( )

    0
    2021-07-15T22:34:17+00:00

    Answer: The volume of NaOH required at the half-equivalence point is 6.21 mL

    Explanation:

    The chemical equation for the reaction of a weak acid with NaOH follows:

    HA+ NaOH\rightarrow NaA+H_2O

    From the equation, we can say that NaOH and weak acid is present in a 1 : 1 ratio.

    We are given:

    Volume of NaOH required at equivalence point = 12.42 mL

    The volume of NaOH required at half-equivalence point will be = \frac{12.42mL}{2}=6.21mL

    Hence, the volume of NaOH required at the half-equivalence point is 6.21 mL

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )