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Consider a solution containing one of the following anions; Cl- , Br-, I- , SO42

ID: 628456 • Letter: C

Question

Consider a solution containing one of the following anions; Cl- , Br-, I- , SO42- , C2O42- , CO32- , NO3- . The solution does not liberate a gas when treated with dilute sulfuric acid. The solution does not reduce an acidic solution of potassium permanganate. The solution does produce a white precipitate when treated with a Ba2+/Ca2+ solution; this precipitate is insoluble 6M HCl. Identify the anion and briefly state how you determined this. If more than one anion fits the test results presented, what test(s) could be performed to distinguish them?

Explanation / Answer

it is CO32- as it forms preciptatte with ba,ca and is not soluble in Hcl like Cacl2.