University:
Boston University
Course:
CAS CH 102 | General Chemistry 2
Academic year:

2021
Views:

127

Pages:

3
Author:

Pacchieriyrzd

1. When a reaction takes place in aqueous solution, the water is part of the ... ΔU = qV versus ΔH = qP 2. An endothermic reaction in aqueous solution ... 0% 1. cools the solution 0% 2. heats the solution 0% 3. Doesn’t change the temperature 4. What is true about the following reaction? NaHCO3(s) + H3O+(aq)  CO2(g) + Na+(aq) + 2 H2O(l) 0% 1. Should be exothermic 0% 2. Should be endothermic 0% 3. Unable to say without further information 0% 0% 0% 0% 1. 2. 3. 4. the system the surroundings both system and surroundings neither system nor surroundings 3. Compared to the cooling when an endothermic reaction takes place in an open container, when the reaction takes placed in a sealed, rigid container, ... 0% 0% 0% 0% 1. 2. 3. 4. the cooling will be greater the cooling will be the same the cooling will be smaller More information needed 5. What is true about the following reaction in an open beaker? NaHCO3(s) + H3O+(aq)  CO2(g) + Na+(aq) + 2 H2O(l) 0% 0% 0% 0% 1. 2. 3. 4. Work is done on the surroundings, w < 0. Work is done on the system, w > 0. No work is done. Unable to say without further information 1 6. What is true about the following reaction in a sealed beaker? NaHCO3(s) + H3O+(aq)  CO2(g) + Na+(aq) + 2 H2O(l) 0% 0% 0% 0% 1. 2. 3. 4. Work is done on the surroundings, w < 0. Work is done on the system, w > 0. No work is done. Unable to say without further information 8. If an aqueous reaction is endothermic, as the reaction proceeds ... 0% 0% 0% 0% 1. 2. 3. 4. The solution should get colder The solution should get warmer There should be no change in temperature Unable to say without further information ΔU = qV versus ΔH = qP Exothermic reaction that has work done on it will get less hot at constant volume. 7. If an aqueous reaction is exothermic, as the reaction proceeds ... 0% 0% 0% 0% 1. 2. 3. 4. The solution should get colder The solution should get warmer There should be no change in temperature Unable to say without further information 9. If a reaction is exothermic, and work is done on it (w > 0), typically because a gas is consumed as the reaction proceeds, ... 0% 1. the reaction solution should get less warm than if no work were done on it. 0% 2. the reaction solution should get warmer than if no work were done on it. 0% 3. there should be no change in warming compared with the w = 0 case. 0% 4. Unable to say without further information 10. If a reaction is endothermic, and does work on the surroundings (w < 0), typically because a gas is formed as the reaction proceeds, ... 0% 1. the reaction solution should get less cold than if no work were done on it. 0% 2. the reaction solution should get colder than if no work were done on it. 0% 3. there should be no change in cooling compared with the w = 0 case. 0% 4. Unable to say without further information 2 ΔU = qV versus ΔH = qP Endothermic reaction that does work on surroundings will get less cold at constant volume. 3