66.7% Tool Adobe E Convert online. Select Pl 002 CHEM 341 PROBLEM SET-FIRST LAW

Question

66.7% Tool Adobe E Convert online. Select Pl 002 CHEM 341 PROBLEM SET-FIRST LAW NAME Water gas reaction Water gas is made by passing steam over a hot red coke (shown below). This and related reactions are industrially important. Convert Micros agraphite) + H20(g) CO(g) + H2(g) 4H298K= 131.303 k3/mol Recogni Change Note R-Ri-C Note: H-H2 C, (H,O (g)-33.577 3/(mol K) C(CO (g)- 29.142 J/(mol K) C,(H,())-28.836 J/(mol K) C (graphite) 8.644 J/(mol K) Creat Send at 398 K. Assuming S are constant in this temperature range, compute the value of

Explanation / Answer

To solve this problem, we first need to calculate the value of Cp0

Cp0 = Cp (CO (g)) + Cp (H2 (g)) - Cp (H2O (g)) - Cp( C(graphite))

=> Cp0 = 29.142 + 28.836 - 33.577 - 8.644 = 15.757 J / (mol K)

Now, it is given that

HTo - HT298 = Integral of Cp0

Since Cp0 is a constant

HTo - HT298 = Cp0 x ( T - 298)

At T = 300 K

delta HTo (398 K) = delta HT298 + Cp0 x ( 398 - 298) = 131303 J/mol + 15.757 x 100 = 132878.7 J/mol = 132.88 KJ/mol

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