The activation energy (E a ) for augite (a pyroxene) is 79 kJ mol -1 , and

Question:

The activation energy (E_a) for augite (a pyroxene) is 79 kJ mol^-1, and the activation energy for anorthite (a plagioclase) is 35 kJ mol^-1. For each of these minerals, calculate the ratio of dissolution rate constant at T=25°C (k_T=25) to the rate constant at T=15°C (k_T=15). The gas constant R has a value of 8.314472 J K^-1mol^-1. Note, you will need to convert the temperatures to degrees Kelvin.