import matplotlib.pyplot as plt
cH3Op = nH3Op / (V_a+V)
cHOm = nHOm / (V_a+V)
cClm = C_a*V_a / (V_a+V)
cNap = C_b*V / (V_a+V)
plt.plot (V, cH3Op*34.965+cClm*7.631+cNap*5.008+cHOm*19.8,"+")
plt.xlabel ("Volume de solution titrante (mL)")
plt.ylabel ("Conductivité de la solution (S/m)")
plt.ylim(0,0.5)
plt.show()