Look at the following chemical equation 4FeS + 702 - 2Fe2O3 + 4502

What is true about this chemical equation?

A. It is unbalanced because the sum of the coefficients of the reactants is greater than the sum of the coefficients of the products.

B. It is balanced because the mass of the reactants is equal to the
mass of the products.
C. It is balanced because the sum of the coefficients of the reactants is greater than the sum of the coefficients of the products.
D. It is unbalanced because the mass of the reactants is greater than
the mass of the products.

do u have any choices to choose from ? ?

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 :