Question

Which statement concerning titrations is incorrect?. Single choice.

(1 Point)

The titration error can be accounted for by running a blank titration.

The titrant is a primary standard after standardization.

The endpoint and equivalence point are not the same

Option 2​

Answer 1

Answer:

option-2

Explanation:

the end point and equivalent point are not same.

Answer 2

Answer:

The titrant is a primary standard after standardization is an incorrect statement.

Therefore, the option (2) is correct.

Explanation:

• A blank titration is performed by titrating known and a fixed concentration of titrant with a pure solvent such as water with no analyte. Only difference from the regular titration will be the absence of analyte in the titration. This gives the amount of reactive substance to be determined within the plain solvent and hence in future titrations, using this solvent allows a determination of the error.
• Equivalence point is a theoretical concept according to which a point where the number of moles of titrant will be equal to number of moles analyte.
• End point is a point which we can observe in the lab during the titration by using a indicator, it shows that the moles of titrant exceed the moles of analyte.
• Primary standard is a reagent which is pure, nontoxic, inexpensive and low reactivity. Primary standards are used to make the standard solutions which are further use for the determination of unknown concentration on an titration. Titrant will not be taken as primary standard.