T =1:700;
RT = 8.314*T;
deltaH = [-113 -184].*1e3;

k11 = 206000*exp(-7610./T);   
k12 = k11.*exp(deltaH(1)./RT);
k21 = 11.7*exp(-1920./T);  
k22 = k21.*exp(deltaH(2)./RT);

plot(T,k11,T,k12,T,k21,T,k22)
legend('k_1_1','k_1_2','k_2_1','k_2_2')