H2 + I2 <=> 2HI + 3 kcal The formation of ___ would be favored by the addition of heat. a) Reactants b) Products
Chemistry · High School · Wed Jan 13 2021
Answered on
a) Reactants
The reaction H2 + I2 <=> 2HI + 3 kcal is an exothermic reaction, meaning it releases heat as it proceeds to form products. The "+ 3 kcal" indicates that 3 kilocalories of heat are given off for every forward reaction that occurs. According to Le Chatelier's Principle, which states that a system in equilibrium will adjust to counteract any changes imposed upon it, the addition of heat will cause the equilibrium to shift to counteract this increase. In this case, by adding heat to the system, the reaction will shift towards the reactants in order to absorb the added heat and restore equilibrium. Therefore, the formation of reactants would be favored by the addition of heat.