Gce Model Questions Vol1 2021 Chemistry Question 40
Practice objective / multiple choice question 40 from the 2021 Gce Model Questions Vol1 Chemistry examination.
A 5.00 g sample of iron metal is heated in excess oxygen, and the mass of the oxide formed is measured as 7.15 g. The standard enthalpies of formation are ΔfH°(FeO) = -272 kJ mol⁻¹ and ΔfH°(Fe₂O₃) = -822 kJ mol⁻¹. (a) Determine which oxide, FeO or Fe₂O₃, has been produced, (b) calculate the experimental enthalpy change per mole of iron based on the data, and (c) compare this value with the theoretical ΔH per mole of iron for the identified oxide.
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This is Gce Model Questions Vol1 2021 Chemistry Question 40. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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