Predict whether a reaction will occur when elemental chlorine and potassium iodide are mixed.
Yes, a reaction will occur when elemental chlorine and potassium iodide are mixed. chlorine is a halogen and potassium iodide is a halide, so they are likely to react in a redox reaction. The chlorine will oxidize the iodide ions, forming iodine and chloride ions. The reaction can be represented as:
Cl2 + 2KI ā 2KCl + I2
Therefore, a reaction will occur when elemental chlorine and potassium iodide are mixed.