c. The concentrations of products will not change because the forward and reverse rates are equal. d. The concentrations of products will change continually because of reversibility. 2. Which of the following are equal for a chemical system at equilibrium? a. the rate of the forward and reverse reaction b. the concentrations of reactant and products are equal c. the rate constants for the forward and reverse reactions are equal d. the time that a particular atom or molecule spends as a reactant and product are equal 3. If heat is added to an endothermic reaction, in which direction will the equilibrium shift according to Le Chatelier's principle? c. cannot be determined a. to the left b. to the right d. equilibrium does not shift

Chemistry
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Chapter1: Chemical Foundations
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c. The concentrations
d. The concentrations
of products will not change because the forward and reverse rates are equal.
of products will change continually because of reversibility.
2. Which of the following are equal for a chemical system at equilibrium?
a. the rate of the forward and reverse reaction
b. the concentrations of reactant and products are equal
c. the rate constants for the forward and reverse reactions are equal
d. the time that a particular atom or molecule spends as a reactant and
product are equal
3. If heat is added to an endothermic reaction, in which direction will the equilibrium shift according to Le Chatelier's
principle?
a. to the left
c. cannot be determined
b. to the right
d. equilibrium does not shift
4. A catalyst
a. favors forward reaction
c. cannot predict the reaction
b. favors the backward reaction
d. has no effect on the reaction
5. What is the equilibrium constant expression Kc for the reaction below?
CH3OH) CO(g) + 2 H2(g)
a. Kc= [CO] [H₂]
b. Kc= [CO] [H₂]²
c. Kc- [CO][H₂]²
[CH3OH]
Kc= ICH3OHI
[COUH₂1²
Transcribed Image Text:c. The concentrations d. The concentrations of products will not change because the forward and reverse rates are equal. of products will change continually because of reversibility. 2. Which of the following are equal for a chemical system at equilibrium? a. the rate of the forward and reverse reaction b. the concentrations of reactant and products are equal c. the rate constants for the forward and reverse reactions are equal d. the time that a particular atom or molecule spends as a reactant and product are equal 3. If heat is added to an endothermic reaction, in which direction will the equilibrium shift according to Le Chatelier's principle? a. to the left c. cannot be determined b. to the right d. equilibrium does not shift 4. A catalyst a. favors forward reaction c. cannot predict the reaction b. favors the backward reaction d. has no effect on the reaction 5. What is the equilibrium constant expression Kc for the reaction below? CH3OH) CO(g) + 2 H2(g) a. Kc= [CO] [H₂] b. Kc= [CO] [H₂]² c. Kc- [CO][H₂]² [CH3OH] Kc= ICH3OHI [COUH₂1²
Read each item carefully and choose the correct answer.
1.Which of the following is true regarding the concentration of products, for a chemical reaction that is already at
equilibrium, assuming no disruptions to the equilibrium?
a. The concentrations of products will not change because there are no more reactants.
b. The concentrations of products will not change because the limiting reagent is gone.
Transcribed Image Text:Read each item carefully and choose the correct answer. 1.Which of the following is true regarding the concentration of products, for a chemical reaction that is already at equilibrium, assuming no disruptions to the equilibrium? a. The concentrations of products will not change because there are no more reactants. b. The concentrations of products will not change because the limiting reagent is gone.
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