(05.04 LC) Which of the following is a valid mole ratio from the balanced equation 2Fe2O3 + 3C — 4Fe + 3C02? (4 points)
a.
Select one:
4 mol C
3 mol Fe
2 mol Fe, O,
b.
4 mol C
3 mol C
C
4 mol CO2
4 mol Fe
d.
3 mol CO2

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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 :