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13. Would you use an oxidizing agent or reducing agent in order for the following reactions to occur?
a. ClO3- ClO2
b. SO42- S2-
c. Mn2+ MnO2
d. Zn ZnCl2
14. How will the rate of a chemical reaction change with increasing temperature from 40 от to 80˚ С, if the temperature coefficient is 2?
15. How will the rate of a chemical reaction change when the temperature drops from 40˚ to 20˚ С, if the temperature coefficient is 4?
16. The reaction at 50 ° C takes 2 minutes 20 seconds. How long does this reaction end at a temperature of 70 ° C, if the temperature coefficient is 2?
17. The reaction rate upon cooling from 80 ° to 60 ° C decreased by 4 times. Find the temperature coefficient of the reaction rate.
18. The chemical reaction in solution corresponds to the equation 3A + B = 2C. Substances A and B are in a gaseous state. How will its speed change if:
a) reduce the concentration of substance B by 2 times, leaving the concentration of substance A the same;
19. Which of the following is true for a chemical reaction at equilibrium?
A. only the forward reaction stops
B. only the reverse reaction stops
C. both the forward and reverse reactions stop
D. the rate constants for the forward and reverse reactions are equal
E. the rates of the forward and reverse reactions are equal
20. A chemical equilibrium may be established by starting a reaction with __________
A. reactants only.
B. any quantities of reactants and products.
C. products only.
D. all the above
E. equal quantities of reactants and products.
21.In the ICE table started for calculating equilibrium concentrations of the reaction shown, the three terms in the “change” row are __________
M+ + 2L = ML+2
Consentration M+ 2L ML+2
I 0.1M 0.32M 0M
C
E
A. –x, –x, +x
B. +x, +2x, +x
C. +x, +x, –x
D. +x, +4x, –x
E. –x, –2x, +x
22. Increasing the temperature of an exothermic reaction results in __________
A. more products and fewer reactants.
B. more reactants and fewer products.
C. more reactants and products.
D. fewer reactants and products.
E. no change in the quantities of reactants and products.
23. Increasing the temperature of an endothermic reaction results in __________
A. more products and fewer reactants.
B. more reactants and fewer products.
C. more reactants and products.
D. fewer reactants and products.
E. no change in the quantities of reactants and products.
25. Which of the listed perturbations will change the position of equilibrium for the following reaction? List those that do as a sequence of letters, e.g., ACE. (There is more than one.)
NH4CO2NH2(s) = 2NH3(g) + CO2(g)
A. Increasing the quantity of NH4CO2NH2(s)
B. Removing CO2(g)
C. Increasing the total pressure
D. Increasing the volume of the container
Answers
Answer: 14 The rate ratio at a temperature increase of 10 degrees (marked by points) is equal to the Q10 coefficient. The Q10 temperature coefficient is a measure of the rate of change of a biological or chemical system as a consequence of increasing the temperature by 10 °C. There are many examples where the ... It can also be applied to chemical reactions and many other systems
Explanation:
Answer:
Would you use an oxidizing agent or reducing agent in order for the following reactions to occur?
a. ClO3- ClO2
b. SO42- S2-
c. Mn2+ MnO2 ✔
d. Zn ZnCl2
14. How will the rate of a chemical reaction change with increasing temperature from 40 от to 80˚ С, if the temperature coefficient is 2?
15. How will the rate of a chemical reaction change when the temperature drops from 40˚ to 20˚ С, if the temperature coefficient is 4?
16. The reaction at 50 ° C takes 2 minutes 20 seconds. How long does this reaction end at a temperature of 70 ° C, if the temperature coefficient is 2?
17. The reaction rate upon cooling from 80 ° to 60 ° C decreased by 4 times. Find the temperature coefficient of the reaction rate.
18. The chemical reaction in solution corresponds to the equation 3A + B = 2C. Substances A and B are in a gaseous state. How will its speed change if:
a) reduce the concentration of substance B by 2 times, leaving the concentration of substance A the same;✔
19. Which of the following is true for a chemical reaction at equilibrium?
A. only the forward reaction stops
B. only the reverse reaction stops
C. both the forward and reverse reactions stop ✔
D. the rate constants for the forward and reverse reactions are equal
E. the rates of the forward and reverse reactions are equal
20. A chemical equilibrium may be established by starting a reaction with __________
A. reactants only.
B. any quantities of reactants and products.
C. products only.
D. all the above ✔
E. equal quantities of reactants and products.
21.In the ICE table started for calculating equilibrium concentrations of the reaction shown, the three terms in the “change” row are __________
M+ + 2L = ML+2
Consentration M+ 2L ML+2
I 0.1M 0.32M 0M
C
E
A. –x, –x, +x
B. +x, +2x, +x
C. +x, +x, –x
D. +x, +4x, –x
E. –x, –2x, +x✔
22. Increasing the temperature of an exothermic reaction results in __________
A. more products and fewer reactants. ✔
B. more reactants and fewer products.
C. more reactants and products.
D. fewer reactants and products.
E. no change in the quantities of reactants and products.
23. Increasing the temperature of an endothermic reaction results in __________
A. more products and fewer reactants.✔
B. more reactants and fewer products.
C. more reactants and products.
D. fewer reactants and products.
E. no change in the quantities of reactants and products.
25. Which of the listed perturbations will change the position of equilibrium for the following reaction? List those that do as a sequence of letters, e.g., ACE. (There is more than one.)
NH4CO2NH2(s) = 2NH3(g) + CO2(g)
A. Increasing the quantity of NH4CO2NH2(s)
B. Removing CO2(g)
C. Increasing the total pressure✔
D. Increasing the volume of the container