Qualitative Analysis - Result Question 21

21. The compound insoluble in acetic acid is

(1986,1 M)

(a) calcium oxide

(b) calcium carbonate

(c) calcium oxalate

(d) calcium hydroxide

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Answer:

Correct Answer: 21. (c)

Solution:

$CaC _2 O _4$ is insoluble in acetic acid. This distinguishes $Ca^{2+}$ from $Ba^{2+}$ ion.