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Author Question: How much heat is released when 85.0 g of steam at 100.0 C is cooled to ice at -15.0 C? The enthalpy ... (Read 99 times)

jazziefee

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on: Jul 8, 2021

Question 1

For the reaction:  CO(g) + 2 H2(g) → CH3OH(g)

Kp = 91.4 at 350 K and Kp = 2.05 × 10-4 at 298 K.

What is the value of ΔrH°?
◦ 49.9 kJ/mol
◦ 2.08 × 103 kJ/mol
◦ 3.74 × 10-2 kJ/mol
◦ 217 kJ/mol
◦ 446 kJ/mol

Question 2

How much heat is released when 85.0 g of steam at 100.0 °C is cooled to ice at -15.0 °C? The enthalpy of vaporization of water is 40.67 kJ mol-1, the enthalpy of fusion for water is 6.01 kJ mol-1, the molar heat capacity of liquid water is 75.4 J mol-1°C-1, and the molar heat capacity of ice is 36.4 J mol-1°C-1.
◦ 54.8 kJ
◦ 221 kJ
◦ 258 kJ
◦ 281 kJ
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by jazziefee on Jul 8, 2021

epscape

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Reply #1 on: Jul 8, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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jazziefee

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Reply 2 on: Jul 8, 2021
Great answer, keep it coming :)

mohan

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Reply 3 on: Yesterday
Gracias!

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