2. Suppose you add compounds A, B, C, and D to a beaker to form an equilibrium mixture. This equilibrium is described by the chemical equation shown below. A + B c + D Answer the following questions about this mixture. a. You add more compound A to the equilibrium mixture. What shift in the equilibrium will occur as a result of this addition? (Enter "correct" for the shift that will result.) A + B C + D (shift to the right) A + B C + D (shift to the left) Page 14 b. Which compounds in the equilibrium mixture will increase in amount as a result of this shift? (Enter "correct" for ALL correct answers.) B

2. Suppose you add compounds A, B, C, and D to a beaker to form an equilibrium mixture. This equilibrium is described by the chemical equation shown below. A + B c + D Answer the following questions about this mixture. a. You add more compound A to the equilibrium mixture. What shift in the equilibrium will occur as a result of this addition? (Enter "correct" for the shift that will result.) A + B C + D (shift to the right) A + B C + D (shift to the left) Page 14 b. Which compounds in the equilibrium mixture will increase in amount as a result of this shift? (Enter "correct" for ALL correct answers.) B

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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i See Periodic Table See Hin Increasing the concentration of a reactant shifts the position of chemical equilibrium towards formation of more products. What effect does adding a reactant have on the rates of the forward and reverse reactions? Choose one: O There is no effect on the forward and reverse reactions. For an equilibrium reaction, the forward and reverse rates are always equal. O Both the forward and reverse reactions speed up by the same amount. O The forward reaction speeds up immediately. As more product is made, the reverse reaction starts to speed up as the forward reaction starts to slow down until they are equal. O The forward reaction slows down initially. As the reaction proceeds, the reverse reaction slows down to meet the new forward reaction. O The forward reaction speeds up. Eventually, production of the product speeds up the reverse reaction rate to match the new forward rate. O It is impossible to say without more specific information.
Consider the reversible reaction N2 + 3H2 = 2NH3 If one adds extra H2 to an equilibrium mixture containing N2, H2 and NH3: a) more N2 will be formed b) more NH3 will be formed c) no change will take place d) new compounds will be formed If one adds a catalyst to an equilibrium mixture containing N2, H2 and NH3: a) more H2 will be formed b) more NH3 will be formed c) no change will take place d) new compounds will be formed The ∆H for this reaction is (-)5.7 kilojoules per mole. If one increases the temperature of an equilibrium mixture containing N2, H2 and NH3: a) more N2 will be formed b) more NH3 will be formed c) no change will take place d) new compounds will be formed Increasing the pressure of an equilibrium mixture containing N2, H2 and NH3: a) more N2 will be formed b) more NH3 will be formed c) no change will take place d) new compounds will be formed
= KINETICS AND EQUILIBRIUM Setting up a reaction table Suppose a 500. mL flask is filled with 1.7 mol of N₂ and 0.10 mol of NH3. This reaction becomes possible: N₂(g) + 3H₂(g)2NH, (g) Complete the table below, so that it lists the initial molarity of each compound, the change in molarity of each compound due to the reaction, and the equilibrium molarity of each compound after the reaction has come to equilibrium. Use x to stand for the unknown change in the molarity of N₂. You can leave out the M symbol for molarity. initial change equilibrium N₂ 0 0 H₂ 0 0 0 NH3 0 0 00 1/5 X
For questions 9-13. Consider the reaction 2NOCI(g) = 2NO(g) + C12(g). If this reaction is at equilibrium, what happens when the following changes occur? 9. NOCI(g) is added O shift to right shift to left no reaction O both shifts to right and left
d. Suppose you add compound E to the equilibrium mixture. Compound E reacts with compound D which is a component of the equilibrium to form compound F as described in the equation below. E + D Which compound is removed from the equilibrium mixture when you add compound E to the mixture? (Enter "correct" for ALL correct answers.) • B D e. What shift in the equilibrium will occur as a result of the addition of compound E? (Enter "correct" for the correct shift.) A + B C + D (shift to the right) A + B C + D (shift to the left)
* Question Completion Status: QUESTION 1 Consider the following reversible reaction at equilibrium: 3 H2(g) + N2(g) → 2NH3(g) + heat Which of the following changes will shift the equilibrium towards the reactants (left side)? O Decreasing the amount of NH3. O Adding a catalyst to the system. O Decreasing the volume of the system. O Decreasing the temperature. O Decreasing the amount of H2. QUESTION 2 Click Save and Submit to save and submit. Click Save All Answers to save all answers. arch DELL prt sc FIO DII F9 F8 F3 F4 FS
The equation represents a chemical reaction at equilibrium. HCI (aq) + Mg (s) + Heat MgCl2 (aq) + H2 (g) What happens to the system when the temperature is decreased? O A. The reaction shifts toward the left, and the amount of hydrogen gas decreases. B. The reaction shifts toward the right, and the amount of hydrogen gas decreases. C. The reaction shifts toward the left, and the amount of hydrogen gas increases. D. The reaction shifts toward the right, and the amount of hydrogen gas increases.
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