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horrorfan [7]
3 years ago
9

A chemistry student was asked to calculate the number of moles of iron required to react with 1.20 mol of oxygen to produce iron

(III) oxide. His calculations is shown below. Is the student correct? Use evidence to support your answer.

Chemistry
1 answer:
nikitadnepr [17]3 years ago
6 0
I’m on the same one smh
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stealth61 [152]
ΔG⁰ = ΔH⁰ - TΔS
ΔH⁰ = Hf,(CH₃OH) - Hf,(CO) = -238.7 + 110.5 = -128.2 kJ/mol
ΔS = S(CH₃OH) - S(CO) - 2S(H₂) = 126.8 - 197.7 - 2 x 130.6 = -332.1 J/mol.K
So 
ΔG⁰ = - 128200 + 332.1 T
For the reaction to be spontaneous:
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So: -128200 + 332.1 T < 0
332.1 T < 128200
T < 386.028 K
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