Barium and lead both produce yellow precipitate with the chromate ion as part of their confirmation tests. if you had a sample that possibly contained lead, barium, or both ions, outline a procedure for correctly identifying the cations present.

Explanation:

Lead belongs to group 1 cations and barium belongs to the fifth group cations.

If the sample, contains lead then it can be precipitated by using dilute HCl as lead chloride. Barium, if present will not precipitate.

Confirmatory test for lead:

Dissolve the precipitate in hot water and centrifugate and divide the filtrate in 3 parts as lead chloride comes in the solution because it is soluble in hot water.

If barium is also present, it can be precipitated by using ammonium carbonate and can be confirmed by the addition of sulphurica cid which gives white precipitate and also addition of the potassium chromate solution. The appearance of yellow precipitate confirms barium. Also, barium imparts green color to the flame.

answer; i believe that the correct answer is (c) explore the outer planets; / plz check good luck