1. The problem statement, all variables and given/known data A common rule of thumb is that temperature 10 degrees C for many reactions will double the reaction rate. Derive under what conditions this is true. 2. Relevant equations ln(k) - ln(2k) = (-Ea/R) [(1/T1)-(1/T2)] 3. The attempt at a solution I know I have to start off by plugging in values for T1 and T2, but what exactly am I trying to solve for? My teacher said to solve for Ea, but that is the measure of kinetic energy needed for reaction....what do I solve for when looking for reaction rate? Also, can I leave the rate constants in or should I plug in actual values for those as well?