Lonny 1202 Views May 29, 2016, 06:19:06 PM Question Solved Share Tweet What is a rate law expression, and how is it determined? What will be an ideal response? Meghann May 29, 2016, 06:25:29 PM #1 Answer The reaction rate law expression is a mathematical equation that expresses the reaction rate in terms of reactant concentrations and the microscopic rate constant of the reaction. Reac-tion rate law expressions must be determined experimentally. Dennis May 29, 2016, 06:35:44 PM #2 You are a blessing.