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CH 2 Unit 2 Concepts

TermDefinition
The rate of a reaction is influenced by several factors. Predict how the reaction rate will change. When there is an increase in the temperature of the reaction, the reaction rate increases
The rate of a reaction is influenced by several factors. Predict how the reaction rate will change. When there is an increase in the activation energy of the reaction, the reaction rate decreases
T/F Adding a catalyst to a system at equilibrium will cause an increase in product concentraction. false
T/F Adding a catalyst to a system not yet at equilibrium will cause equilibrium to be reached faster true
T/F Adding a catalyst can cause an endothermic process to become exothermic. false
T/F Adding a catalyst will cause the reverse reaction to run at a slower rate false
For an equilibrium reaction in which kf is much greater than kr … the reaction strongly favors products.
What statement is true about the role of a catalyst? A catalyst offers an alternative reaction pathway with a lower activation energy.
What is/are equal once equilibrium is established? the rates of the forward and reverse reactions
what is true about a reaction mechanism? A rate law can be written from the molecularity of the slowest elementary step. A mechanism can never be proven to be the correct pathway for a reaction
An increase in the concentration of a catalyst will result in a(n) no change
An increase in the concentration of compound Y will result in an ... in the activation energy of the reaction. no change
what is fusion combining 2+ light nuclei to form a heavier nuclei
what is fission splitting a heavy nuclei
In which of the following situations will Keq change? when temperature is changed
Consider the following reaction: CO(g) + 2 H2(g) ⇌ CH3OH(g) At room temperature, K is approximately 2 ×10^4, but at a higher temperature K is substantially smaller. Which of the following is true? the reaction is exothermic
For an exothermic reaction: A(g) ⇌ B(g) + heat • Increasing the temperature results in a shift to the left. what does K do? decreases in magnitude
For an endothermic reaction: heat + C(g) ⇌ D(g) • Increasing the temperature results in a shift to the right. What does K do? increases in magnitude
For an exothermic reaction: A(g) ⇌ B(g) + heat • Decreasing the temperature results in a shift to the right. What does K do? increases in magnitude
For an endothermic reaction: heat + C(g) ⇌ D(g) • Decreasing the temperature results in a shift to the left. what does K do? decreases in magnitude
Created by: M1348
 

 



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