If this reaction is exothermic, what may be expected as the temperature is reduced? [Products] will decrease. [Products] will increase. [Reactants] will increase. Reduction in temperature has no effect.

Products will increase.

Explanation:

An exothermic reaction in chemistry is that reaction which releases heat as a product to its surroundings. Le Chatelier’s principle describes the effect of a stressed equilibrium i.e. a reaction will shift to counter the effect of the stress. Temperature is one of the four variables that affects or cause a change in the equilibrium of a system.

Since an exothermic reaction gives off heat as a form of energy, a decrease in heat will favour the formation of products or shift the reaction right because decreasing the temperature, which is a source of heat energy, for an exothermic reaction is like decreasing a product. Hence the system will act to favour the increase of products.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

answer; talc and gypsum;