Question

Chloromethane reacts with iodide ion to yield iodomethane and chloride ion. CH3Cl + I– → CH3I...

Chloromethane reacts with iodide ion to yield iodomethane and chloride ion.

CH3Cl + I– → CH3I + Cl–

A way to determine the rate of the reaction of chloromethane with iodide ion is to measure the disappearance of I– from the solution. Suppose that the concentration of I– was 0.29 mol I–/L at the start of the reaction. At the end of 20 min, the concentration dropped to 0.21 mol I–/L. This difference is equal to a change in concentration of -0.08 mol I–/L.

QUESTION:

What is the rate of reaction with respect to iodide ion?

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