The white precipitate (P) is :
CuSO4 (aq) + H2S (g) → CuS (ppt) + H2SO4(aq)
What is the colour of precipitate formed in the above precipitation reaction?
Excess of KI reacts with CuSO4 solution and then Na2S2O3 solution is added to it. Which of the following statement is incorrect from this reaction