### 15.61 equation

Posted:

**Sun Feb 19, 2017 10:54 pm**In book problem 15.61 why does the solution manual use the equation

ln(k'/k) = (Ea/R) x ((T' - T) / (T'T))

instead of

ln(k'/k) = (Ea/R) x ((1/T) - (1-T')) ?

The solution manual says the two equations are equal but I am confused how the second one is derived / why it is used / why it produces a different answer than the first.

ln(k'/k) = (Ea/R) x ((T' - T) / (T'T))

instead of

ln(k'/k) = (Ea/R) x ((1/T) - (1-T')) ?

The solution manual says the two equations are equal but I am confused how the second one is derived / why it is used / why it produces a different answer than the first.