Calculate the standard free energy change for the formation of methane – InterviewSolution

1.	Calculate the standard free energy change for the formation of methane at 298 K. C(graphite)+2H2(g)→CH4(g) Given that, Δ of CH4=−74.81KJmol−1 and ΔS∘ of Cgraphite,H2(g) and CH4(g) are 5.70K−1mol−1, and 186.3JK−1mol−1 respectively.
Answer» Calculate the standard free energy change for the formation of methane at 298 K. $C_{(g r a p h i t e)} + 2 H_{2 (g)} \to C H_{4 (g)}$ Given that, $Δ o f C H_{4} = - 74.81 K J m o l^{- 1}$ and $Δ S^{\circ} o f C_{g r a p h i t e}, H_{2 (g)} a n d C H_{4 (g)} a r e 5.70 K^{- 1} m o l^{- 1}, a n d 186.3 J K^{- 1} m o l^{- 1}$ respectively.

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