For the equilibrium reaction H2(g) + I2(g) ⇌ 2HI(g), what effect does increasing the temperature have if the reaction is exothermic?

A. Shifts to the left
B. Shifts to the right
C. No effect
D. Increases K value

Answer: Shifts to the left


Additional Information: Increasing temperature for an exothermic reaction shifts equilibrium towards reactants.