Kobe is testing whether 100g of substance a, 100g of substance b, or 100g of substance c produces more oxygen in a chemical reaction at 25°
c. what is the independent variable?
a. temp of the substances
b. the amount of oxygen produced
c. the nature of the substance
d. the masses of the substaances

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 :