Question

5 points
2. Which sentence is false
about gravimetric analysis ? *
A. It is used for inorganic ion.
B. It is used to assay barium
sulphate.
Ο Ο
C. It is used to assay of aluminum.
D. Relative precision 3 to 4%​

Answer 1

Answer:

D is wrong

Explanation:

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Answer 2

d. Relative precision 3 to 4% is false about gravimetric analysis.

Gravimetric analysis

• Gravimetric analysis is a process by which the quantity of any ion undergoing analysis can be checked by the measurement of the masses.
• It depends on the comparison masses of any two compounds which contain the analyte. The precipitate needed to be a pure compound.

Some of the advantages of gravimetric analysis are as follows

• Determination of the extensive quantity of inorganic ions has outstanding precision and accuracy.
• can be used for metallurgical sample routine assay.
• gives relative precision from 0.1 - 1%.
• Gives better accuracy.

Therefore, relative precision 3% to 4% is false statement about gravimetric analysis.