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owing reaction A2(aq) B2 2AB(aq) reactants Progress of reaction w the location o

ID: 495224 • Letter: O

Question

owing reaction A2(aq) B2 2AB(aq) reactants Progress of reaction w the location of the products if this is an endothermic reaction. b. Is the value of q positive or negative? c. Will the reaction vessel feel warmer or cooler than it did initially?e 12. (5) Which object contains more heat, an ice cube or an iceberg? Briefly explain your answer. icberg, se it is bigg ice explain why it is no longer true. 14. (4) A 5.0 L closed flask contains He, Ne, and Ar. If the valve on the flask is opened, which gas will have the slowest rate of speed out of the flask? a. He b. Ne Ar d. They will be the same.

Explanation / Answer

11. For the given energy diagram

a. Drawn below the product level for an endothermic reaction. The product energy is greater than the energy of reactants.

b. Value of q would be positive for an endothermic reaction

c. The reaction would appear cooler than the initial condition as heat is absorbed during the reaction.

12. Iceburg contains more heat as it is larger in size and thus can hold more energy.

13. Kinetic postulates that all gases move at same speed fails at high pressures.

14. The gas to move slowest would be,

c. Ar

This is based on kinetic theory of gases, which states that speed of effusion is inversely proportional to the square root of molar mass of the gas.