<Dl> <Dd> r = k (T) (A) n (B) m (\ displaystyle \, r = k (T) (\ mathrm (A)) ^ (n) (\ mathrm (B)) ^ (m)) </Dd> </Dl> <Dd> r = k (T) (A) n (B) m (\ displaystyle \, r = k (T) (\ mathrm (A)) ^ (n) (\ mathrm (B)) ^ (m)) </Dd> <P> For gas phase reaction the rate is often alternatively expressed by partial pressures . </P> <P> In these equations k (T) is the reaction rate coefficient or rate constant, although it is not really a constant, because it includes all the parameters that affect reaction rate, except for concentration, which is explicitly taken into account . Of all the parameters influencing reaction rates, temperature is normally the most important one and is accounted for by the Arrhenius equation . </P>

How can i determine how much energy it takes for a reaction to occur