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Consider the following reaction and its associated rate law A + B - C; rate =...
Question 15 4 pts Consider the following generic reaction and the corresponding rate law: X+Y+zStuff Rate...
Question 15 4 pts Consider the following generic reaction and the corresponding rate law: X+Y+zStuff Rate = k[Y][Z]2 Which of the following changes will NOT increase the rate of this reaction? Increasing the concentration of reactant X Increasing the concentration of reactant z Adding a catalyst Increasing the temperature O Increasing the average number of collisions per second of the reactants
6 of 15 A student observes that the reaction rate of the catalyzed reaction A B+C...
6 of 15 A student observes that the reaction rate of the catalyzed reaction A B+C is unaffected by adding extra catalyst. Which conclusion is correct? The rate law must be first order. O The rate is unaffected since the catalyst's effect is part of k. O The reaction probably is more likely to go in reverse than the forward direction. O The temperature needs to be increased to make the catalyst work better. 7 of 15 A student states...
4. A particular reaction is found to have the following rate law: Rate = k[A] [B]...
4. A particular reaction is found to have the following rate law: Rate = k[A] [B] Which terms in this rate law are made different by each of the following changes? a. The concentration of A is doubled. Kate becomes a times the previous rate b. A catalyst is added. C. The concentration of A is increased by a factor of 2 and the concentration of Bis decreased by a factor of 4. d. The temperature is increased.
Consider the following reaction: A + B + C +D The rate law for this reaction...
Consider the following reaction: A + B + C +D The rate law for this reaction is as follows: Rate = k Alla B11/2 Suppose the rate of the reaction at certain initial concentrations of A, B, and C is 1.14x10-2 M/s. Part A What is the rate of the reaction if the concentrations of A and C are doubled and the concentration of B is tripled? VO AED A O O ? Rate 2 = M/s Submit Request Answer
QUESTION 1 Consider the following chemical reaction: Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) Which of...
QUESTION 1 Consider the following chemical reaction: Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) Which of the following changes will increase the rate of this reaction? Decreasing the concentration of HCI. O Adding more MgCl2. O Increasing the pressure of H2. Decreasing the temperature. Adding a catalyst. N QUESTION 2
Suppose a reaction occurs with the following mechanism: Step 1: 2AD Step 2: D+E- (fast) B+C...
Suppose a reaction occurs with the following mechanism: Step 1: 2AD Step 2: D+E- (fast) B+C (slow) 1. What is the overall reaction? [Select] 2. What is the intermediate in the mechanism? (Select] 3. What is the molecularity of step 1? (Select 4. Which step is the rate determining step? [Select) 5. What is the rate law predicted by this mechanism? [Select) Question 22 15 pts Consider the following reaction at equilibrium: CO(g) + 2H2(g) CH2OH(g) AH=-18 kJ How will...
Which of the following changes will affect the rate constant of a reaction? 1. Increasing or...
Which of the following changes will affect the rate constant of a reaction? 1. Increasing or decreasing the reaction temperature. 2. Adding a catalyst. 3. Increasing or decreasing the reactant concentrations. Choices: a. 1 only b. 2 only c. 3 only d. 1 and 2 e. 1, 2, and 3
6. Consider the equation: 2NO2(g) → N2(g) +202() What effect will the following changes have on the reaction rate (...
6. Consider the equation: 2NO2(g) → N2(g) +202() What effect will the following changes have on the reaction rate (increase or decrease)? a) The temperature is decreased from 800 K to 300 K? b) A catalyst is added c) The concentration of NO2 gas is doubled. True or False A reaction with larger Eact will proceed faster Raising the temperature of a reaction increases the rate of a reaction Catalysts increase the rate of a reaction by increasing the number...
For the reaction A + 2B + 3C + D → products, the rate law is:...
For the reaction A + 2B + 3C + D → products, the rate law is: rate =k[A][B][C] Which of the following statements are false? Select one: a. the reaction is first order in [A] b. the reaction is first order in [B] c. the reaction is first order in [D] d. the reaction is second order in [C] e. the reaction is 4th order overall Which of the following states is false? Select one: a. Catalysts provide an alternative...
A. “A →B" B "B C” C. " C D" D. None of the above 5....
A. “A →B" B "B C” C. " C D" D. None of the above 5. Which of the following are true of reaction rates? I. The overall rate law is determined by the fastest step of a reaction II. The presence of a catalyst will increase the number of molecules entering the transition state III. An increase in temperature will increase the rate of a reaction IV. Increasing the concentration of reactants will increase the rate at which products...
Question 15 4 pts Consider the following generic reaction and the corresponding rate law: X+Y+zStuff Rate = k[Y][Z]2 Which of the following changes will NOT increase the rate of this reaction? Increasing the concentration of reactant X Increasing the concentration of reactant z Adding a catalyst Increasing the temperature O Increasing the average number of collisions per second of the reactants
6 of 15 A student observes that the reaction rate of the catalyzed reaction A B+C is unaffected by adding extra catalyst. Which conclusion is correct? The rate law must be first order. O The rate is unaffected since the catalyst's effect is part of k. O The reaction probably is more likely to go in reverse than the forward direction. O The temperature needs to be increased to make the catalyst work better. 7 of 15 A student states...
4. A particular reaction is found to have the following rate law: Rate = k[A] [B] Which terms in this rate law are made different by each of the following changes? a. The concentration of A is doubled. Kate becomes a times the previous rate b. A catalyst is added. C. The concentration of A is increased by a factor of 2 and the concentration of Bis decreased by a factor of 4. d. The temperature is increased.
Consider the following reaction: A + B + C +D The rate law for this reaction is as follows: Rate = k Alla B11/2 Suppose the rate of the reaction at certain initial concentrations of A, B, and C is 1.14x10-2 M/s. Part A What is the rate of the reaction if the concentrations of A and C are doubled and the concentration of B is tripled? VO AED A O O ? Rate 2 = M/s Submit Request Answer
QUESTION 1 Consider the following chemical reaction: Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) Which of the following changes will increase the rate of this reaction? Decreasing the concentration of HCI. O Adding more MgCl2. O Increasing the pressure of H2. Decreasing the temperature. Adding a catalyst. N QUESTION 2
Suppose a reaction occurs with the following mechanism: Step 1: 2AD Step 2: D+E- (fast) B+C (slow) 1. What is the overall reaction? [Select] 2. What is the intermediate in the mechanism? (Select] 3. What is the molecularity of step 1? (Select 4. Which step is the rate determining step? [Select) 5. What is the rate law predicted by this mechanism? [Select) Question 22 15 pts Consider the following reaction at equilibrium: CO(g) + 2H2(g) CH2OH(g) AH=-18 kJ How will...
6. Consider the equation: 2NO2(g) → N2(g) +202() What effect will the following changes have on the reaction rate (increase or decrease)? a) The temperature is decreased from 800 K to 300 K? b) A catalyst is added c) The concentration of NO2 gas is doubled. True or False A reaction with larger Eact will proceed faster Raising the temperature of a reaction increases the rate of a reaction Catalysts increase the rate of a reaction by increasing the number...
For the reaction A + 2B + 3C + D → products, the rate law is: rate =k[A][B][C] Which of the following statements are false? Select one: a. the reaction is first order in [A] b. the reaction is first order in [B] c. the reaction is first order in [D] d. the reaction is second order in [C] e. the reaction is 4th order overall Which of the following states is false? Select one: a. Catalysts provide an alternative...
A. “A →B" B "B C” C. " C D" D. None of the above 5. Which of the following are true of reaction rates? I. The overall rate law is determined by the fastest step of a reaction II. The presence of a catalyst will increase the number of molecules entering the transition state III. An increase in temperature will increase the rate of a reaction IV. Increasing the concentration of reactants will increase the rate at which products...
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