at 298 k hrxn 13128 kjmol1 for the reaction cgraphite h2ogcogh2g with cpm 853 3358 2912 and 2882

Name: at 298 k hrxn 13128 kjmol1 for the reaction cgraphite h2ogcogh2g with cpm 853 3358 2912 and 2882 jk1mol1 for graphite h2og cog and h2g respectively calculate hrhr at 255 cc from this informa 04737
Uploaded: 2023-03-26T18:33:06-08:00
Duration: 3 min 32 s
Channel: Sri K
Description: at 298 k hrxn 13128 kjmol1 for the reaction cgraphite h2ogcogh2g with cpm 853 3358 2912 and 2882 jk1mol1 for graphite h2og cog and h2g respectively calculate hrhr at 255 cc from this informa 04737

First, we need to find the change in heat capacity for the reaction, ΔCp. This can be calculated

Question

At 298 K, ΔH°rxn = 131.28 kJ/mol for the reaction C(graphite) + H2O(g) → CO(g) + H2(g), with CP,m = 8.53, 33.58, 29.12, and 28.82 J/(K·mol) for graphite, H2O(g), CO(g), and H2(g), respectively. Calculate ΔH°R at 255 °C from this information. Assume that the heat capacities are independent of temperature.

          At 298 K, ΔH°rxn = 131.28 kJ/mol for the reaction C(graphite) + H2O(g) → CO(g) + H2(g), with CP,m = 8.53, 33.58, 29.12, and 28.82 J/(K·mol) for graphite, H2O(g), CO(g), and H2(g), respectively. 
Calculate ΔH°R at 255 °C from this information. Assume that the heat capacities are independent of temperature.

Added by Veronica R.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Sri K

03/26/2023

Step 1

This can be calculated as the sum of the heat capacities of the products minus the sum of the heat capacities of the reactants: ΔCp = (Cp,CO + Cp,H2) - (Cp,graphite + Cp,H2O) ΔCp = (29.12 + 28.82) - (8.53 + 33.58) ΔCp = 5.83 J K^-1 mol^-1 Now, we can use the Show more…

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At 298 K, ΔH°rxn = 131.28 kJ/mol for the reaction C(graphite) + H2O(g) → CO(g) + H2(g), with CP,m = 8.53, 33.58, 29.12, and 28.82 J/(K·mol) for graphite, H2O(g), CO(g), and H2(g), respectively. Calculate ΔH°R at 255 °C from this information. Assume that the heat capacities are independent of temperature.