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4. When 1.50 g of Ba(s) is added to 100.00 g of water in a container open to the atmosphere, the reaction shown below occurs and the temperature of the resulting solution rises from 22.00°C to 33.10°C. If the specific heat of the solution is 4.18 JF(g - "Q), calculate AH for the reaction, as written. Ba (s) + 2 H,O (1) → Ba(OH), (aq) + H; (g) AH=?

4. When 1.50 g of Ba(s) is added to 100.00 g of water in a container open to the atmosphere, the reaction shown below occurs and the temperature of the resulting solution rises from 22.00°C to 33.10°C. If the specific heat of the solution is 4.18 JF(g - "Q), calculate AH for the reaction, as written. Ba (s) + 2 H,O (1) → Ba(OH), (aq) + H; (g) AH=?

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.132QP
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4. When 1.50 g of Ba(s) is added to 100.00 g of water in a container open to the atmosphere, the reaction shown below occurs and the temperature of the resulting solution rises from 22.00°C to 33.10°C. If the specific heat of the solution is 4.18 J/(g - "C), calculate AH for the reaction, as written. Ва (6) +2 H,О () — Ba(ОН), (аg) + Н, (g) ΔΗ-? 5. What is AH for BaCO, (s) → BaO (s)+ CO, (g) Given reactions 2 Ba (s) + 0, (g) —2 ВаО (s) Ba (s) + CO, (g) + 1/2 O, (g) → BaCO, (g) AH = -1106.0 kJ AH= -822.0 kJ 82
Transcribed Image Text:4. When 1.50 g of Ba(s) is added to 100.00 g of water in a container open to the atmosphere, the reaction shown below occurs and the temperature of the resulting solution rises from 22.00°C to 33.10°C. If the specific heat of the solution is 4.18 J/(g - "C), calculate AH for the reaction, as written. Ва (6) +2 H,О () — Ba(ОН), (аg) + Н, (g) ΔΗ-? 5. What is AH for BaCO, (s) → BaO (s)+ CO, (g) Given reactions 2 Ba (s) + 0, (g) —2 ВаО (s) Ba (s) + CO, (g) + 1/2 O, (g) → BaCO, (g) AH = -1106.0 kJ AH= -822.0 kJ 82
Pre-Laboratory Assignment 1. Sam performed a reaction in lab where he mixed a dilute solution of hydrochloric acid into a dilute solution of sodium hydroxide. The temperature of the mixed solution rose immediately from 20.0°C to 30.0 °C. Was the reaction Sam performed in the lab exothermic or endothermic? What evidence (observation) for this reaction supports your inference? 2. Define Hess's Law. 3. Predict the target reaction which can be obtained by adding step 1 and 2 shown below. Also calculate the heat of reaction of the target reaction, which can be obtained by AH" from step 1 and 2. Step 1 2 Hy(g) + N>(g) N,H,(g) AH = 95.4 Step 2 NgH,(g) + Ha(g) 2 NH3(g) AH" =-187.6 kJ kJ 81
Transcribed Image Text:Pre-Laboratory Assignment 1. Sam performed a reaction in lab where he mixed a dilute solution of hydrochloric acid into a dilute solution of sodium hydroxide. The temperature of the mixed solution rose immediately from 20.0°C to 30.0 °C. Was the reaction Sam performed in the lab exothermic or endothermic? What evidence (observation) for this reaction supports your inference? 2. Define Hess's Law. 3. Predict the target reaction which can be obtained by adding step 1 and 2 shown below. Also calculate the heat of reaction of the target reaction, which can be obtained by AH" from step 1 and 2. Step 1 2 Hy(g) + N>(g) N,H,(g) AH = 95.4 Step 2 NgH,(g) + Ha(g) 2 NH3(g) AH" =-187.6 kJ kJ 81
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