Which of the following statements is true? (Multiple answers possible) Group of answer choices:
a. There is no error associated with the difference in equivalence and endpoints.
b. The endpoint does not correspond exactly to the equivalence point. c. At the endpoint, a change in a physical quantity associated with the equivalence point occurs.
d. The endpoint corresponds exactly to the equivalence point.
e. At the equivalence point, the mole number of equivalents of reagent added is equal to the mole number of equivalents of analyte present. f. At the equivalence point, the amount of reagent added does not yet equal to the amount of analyte present.

Question

14-02-2020
Chemistry

contestada

Which of the following statements is true? (Multiple answers possible) Group of answer choices:
a. There is no error associated with the difference in equivalence and endpoints.
b. The endpoint does not correspond exactly to the equivalence point. c. At the endpoint, a change in a physical quantity associated with the equivalence point occurs.
d. The endpoint corresponds exactly to the equivalence point.
e. At the equivalence point, the mole number of equivalents of reagent added is equal to the mole number of equivalents of analyte present. f. At the equivalence point, the amount of reagent added does not yet equal to the amount of analyte present.

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pstnonsonjoku pstnonsonjoku · Answer 1 · 2020-02-16T03:33:52+01:00

Answer:The endpoint does not correspond exactly to the equivalence point

At the endpoint, a change in a physical quantity associated with the equivalence point occurs.

At the equivalence point, the mole number of equivalents of reagent added is equal to the mole number of equivalents of analyte present.

Explanation:

The end point is always indicated by some physical property that changes such as colour. At the equivalence point, the mole number of equivalents of reagent added is equal to the mole number of equivalents of analyte present. The equivalence point cannot be physically observed but can be deduced after a titration curve is plotted.