Identify the incorrect statements regarding primary standard of titrimetric analysis.

(A) It should be purely available in dry form.

(B) It should not undergo chemical change in air.

(C) It should

Question

Identify the incorrect statements regarding primary standard of titrimetric analysis.

(A) It should be purely available in dry form.

(B) It should not undergo chemical change in air.

(C) It should be hygroscopic and should react with another chemical instantaneously and stoichiometrically.

(D) It should be readily soluble in water.

(E)  & NaOH can be used as primary standard.

Choose the correct answer from the options given below:

Canvas Classes · Accepted Answer

Properties of a primary standard:
A primary standard must be:
1. Available in high purity
2. Stable in air (not hygroscopic, not oxidised)
3. High molar mass (to reduce weighing errors)
4. Readily soluble in the solvent
5. React stoichiometrically and completely

Step 1 — Evaluate each statement:

(A) "Available in dry form" — ✓ Correct property of a primary standard

(B) "Should not undergo chemical change in air" — ✓ Correct (must be stable)

(C) "Should be hygroscopic" — ✗ Incorrect: A primar

More questions from Redox Reactions