A student is studying the equilibrium mixture described by the net ionic equation below
[Cu(H2O)6]2+ (blue) + 4Br- ↔ CuBr42- (green) +6H2O
1. The student heated a sample of the blue solution. After a short time, the solution changed from blue to green. Is the forward reaction endothermic or exothermic? Briefly explain.
2. The student adds Ag ions to the mixture. Predict what the student will observe (color) and explain.
3. The student added NaBr to the equilibrium mixture. Predict what the student will observe (color) and explain