Two tests are carried out on an aqueous solution of copper(II) sulfate, CuSO4(aq).
Test 1: Addition of potassium iodide solution
Test 2: Addition of barium chloride solution
Which of the following statements is / are true?
1: Test 1 produces an off-white precipitate and a brown solution.
2: Test 2 produces a white precipitate.
3: Test 1 and Test 2 are both redox reactions.
A. 1, 2 and 3
B. Only 1 and 2
C. Only 2 and 3
D. Only 1
i know why option 1 and 2 are correct but i dont know why option 3 is wrong because i thought that the reaction that produces BaS04 is redox. if not what type of reaction is it??