Here's a basic MATLAB version.
% Initial conditions
Ca0 = 2;
Cb0 = 4;
Cc0 = 0;
Cd0 = 0;
T0 = 800;
IC = [Ca0 Cb0 Cc0 Cd0 T0];
% V range
Vspan = [0 10];
% Call ode solver
[V, CT] = ode45(@fn, Vspan, IC);
% Extract parameters
Ca = CT(:,1);
Cb = CT(:,2);
Cc = CT(:,3);
Cd = CT(:,4);
T = CT(:,5);
% Plot graphs
figure
plot(V,Ca,V,Cb,V,Cc,V,Cd),grid
xlabel('V'),ylabel('Ca.Cb.Cc,Cd')
legend('Ca','Cb','Cc','Cd')
figure
plot(V,T),grid
xlabel('V'),ylabel('T')
% ODE function
function dCTdV = fn(~,CT)
% Data
Cpa = 20;
dh1a = 20000;
dh2a = -10000;
vo = 10;
% Extract parameters
Ca = CT(1);
Cb = CT(2);
Cc = CT(3);
Cd = CT(4);
T = CT(5);
% k and r functions
k1a = 0.001*exp(-5000/1.987*(1/T - 1/300));
k2a = 0.001*exp(-7500/1.987*(1/T - 1/300));
r1a = -k1a*Ca*Cb^2;
r2a = -k2a*Ca*Cc;
% odes
dCTdV = [(r1a+r2a)/vo;
2*r1a/vo;
(-2*r1a+r2a)/vo;
-2*r2a/vo;
(r1a*dh1a + r2a*dh2a)/((Ca+Cb+3*Cc+4*Cd)*vo*Cpa)];
end
I'll leave you to construct the tabular form of the results.
