Homework Answers
Overall Rate Law is determined by the slowest step of the reaction so first statement is wrong.
Presence of catalyst will not increase the number of molecule entering the transition state while it increases the possibilities of product formed. So this statement is also wrong.
An increase in temperature will always increase the rate of reaction as the molecules gain more kinetic energy. This statement is right.
An increase in the concentration of reactants will increase the rate at which product yield. so this statement is true.
Checking statements are false while 3rd and 4th statements are true.
Answer will be C.
QUESTION 2 Which factors would increase the rate of a reaction? I. increasing the temperature II. Increasing the c...
QUESTION 2 Which factors would increase the rate of a reaction? I. increasing the temperature II. Increasing the concentration of reactants III. Adding a catalyst I Tnly ll only Ill only II and III I, II and III
CIC-CH.CH $$ 0,09 ( -CCHCH, K CANON D) IV 2, whicen er falowing the A) B)...
CIC-CH.CH $$ 0,09 ( -CCHCH, K CANON D) IV 2, whicen er falowing the A) B) II CITI 21) Which of the following alkenes is the most stable? or more com B) II D) IV 22) For the following reaction, use the identity of the alkyl halide and nucleophile to determine which substitution mechanism occurs. Then determine which solvent affords the faster reaction. OH + BO • ное но A) SN 2, H20 B DMF ) SN1, H20 SN1, DMF...
8. (20 points) Consider the following mechanism, with the accompanying energy diagram, which has been suggested...
8. (20 points) Consider the following mechanism, with the accompanying energy diagram, which has been suggested for the following overall reaction in the presence of a Cl catalyst: 03 +0 202 Step 1: Step 2: 03 + Cl → OCl + O2 OCl + 0 + 02 + Cl +---Ea, Energy - - - - AHrxn --- - Reaction progress- A. Based on the energy diagram, which step is rate limiting? Which step is the fastest? (4 Points) B. Identify...
study guide questions plese help C. Second d. Third e. Lunch 25)Which of the following factors...
study guide questions plese help
C. Second d. Third e. Lunch 25)Which of the following factors will influence the rate of a chemical reaction? 1. decreasing the concentration of the react II. increasing the concentration of the reach III. changing the particle size of solid react IV. changing the temperature a. I, II and III b. II and III c. III and IV d. II, III and IV e. all of them
Consider the following reaction and its associated rate law A + B - C; rate =...
Consider the following reaction and its associated rate law A + B - C; rate = k[A]2 Which of the following will not increase the rate of the reaction? Select one: a. increasing the concentration of reactant A O b. increasing the concentration of reactant B O c. increasing the temperature of the reaction d. adding a suitable catalyst O e. all of the above
In the endothermic reaction 2NOBr(g) = 2NO(g) + Br2(g) at equilibrium, which of the following changes...
In the endothermic reaction 2NOBr(g) = 2NO(g) + Br2(g) at equilibrium, which of the following changes will result in an increase in the partial pressure of NOBr? 1. decreasing the partial pressure of Br2 II. increasing the size of the reaction vessel III. lowering the overall temperature of the reaction IV. adding a catalyst V. adding He(g) O A I and II I and II O B lland III O c IV and V IV and V III and V...
Sample Examination II t a system at equlibriurm aecording to the equation 159 s added to...
Sample Examination II t a system at equlibriurm aecording to the equation 159 s added to such an equilibrium system at constant volume and temperatare, the total pressure ses and the number of NHs molecules present increases (B) decreases and the number of NHa molecules present Increases remains the same and the rumber of Nils molecules present increases remains the same and the number of NHs molecules present decreases E) increases and the number of NiHs molecules present remains the...
Effect of a Catalyst on Reaction Rate: with a lower Ea than for the uncatalyzed reaction....
Effect of a Catalyst on Reaction Rate: with a lower Ea than for the uncatalyzed reaction. This is shown as the blue path with Ea in the diagram below t a given temperature, a catalyst increases the rate of a reaction by providing a pathway E (RJ) products Reaction Coordinale Since the potential energy barrier is lower in the presence of a catalyst, a greater fraction of the molecules will have sufficient energy to react. Because the reactants and products...
Consider the equilibrium: Fe3O4(s) + CO(g) ←à 3 FeO(s) + CO2(g) ΔH= +18 kJ. Which of...
Consider the equilibrium: Fe3O4(s) + CO(g) ←à 3 FeO(s) + CO2(g) ΔH= +18 kJ. Which of the following stresses when applied to an equilibrium mixture of reactants and products, will cause [CO] to increase? I. Decrease in pressure due to a increase in volume. II. Doubling the [CO2]. III. Addition of a catalyst. IV. Halving the mass of solid Fe3O4. V. Increase in the temperature. A.I only B. I, II and V C. I, III and IV D. II and...
1. (18 points; 3 points each] Multiple Choice: Circle the best answer i. Consider the following...
1. (18 points; 3 points each] Multiple Choice: Circle the best answer i. Consider the following reaction: Xooot THF, A If there are no other changes, what is the effect of doubling the concentration of the starting alcohol on the rate of this reaction? a. No change b. Doubles the rate C. Triples the rate d. Quadruples the rate ii. Which nitrogen compound below would react fastest as a nucleophile in an 5, 2 reaction? NH NH N d. "NH2...
QUESTION 2 Which factors would increase the rate of a reaction? I. increasing the temperature II. Increasing the concentration of reactants III. Adding a catalyst I Tnly ll only Ill only II and III I, II and III
CIC-CH.CH $$ 0,09 ( -CCHCH, K CANON D) IV 2, whicen er falowing the A) B) II CITI 21) Which of the following alkenes is the most stable? or more com B) II D) IV 22) For the following reaction, use the identity of the alkyl halide and nucleophile to determine which substitution mechanism occurs. Then determine which solvent affords the faster reaction. OH + BO • ное но A) SN 2, H20 B DMF ) SN1, H20 SN1, DMF...
8. (20 points) Consider the following mechanism, with the accompanying energy diagram, which has been suggested for the following overall reaction in the presence of a Cl catalyst: 03 +0 202 Step 1: Step 2: 03 + Cl → OCl + O2 OCl + 0 + 02 + Cl +---Ea, Energy - - - - AHrxn --- - Reaction progress- A. Based on the energy diagram, which step is rate limiting? Which step is the fastest? (4 Points) B. Identify...
study guide questions plese help
C. Second d. Third e. Lunch 25)Which of the following factors will influence the rate of a chemical reaction? 1. decreasing the concentration of the react II. increasing the concentration of the reach III. changing the particle size of solid react IV. changing the temperature a. I, II and III b. II and III c. III and IV d. II, III and IV e. all of them
Consider the following reaction and its associated rate law A + B - C; rate = k[A]2 Which of the following will not increase the rate of the reaction? Select one: a. increasing the concentration of reactant A O b. increasing the concentration of reactant B O c. increasing the temperature of the reaction d. adding a suitable catalyst O e. all of the above
In the endothermic reaction 2NOBr(g) = 2NO(g) + Br2(g) at equilibrium, which of the following changes will result in an increase in the partial pressure of NOBr? 1. decreasing the partial pressure of Br2 II. increasing the size of the reaction vessel III. lowering the overall temperature of the reaction IV. adding a catalyst V. adding He(g) O A I and II I and II O B lland III O c IV and V IV and V III and V...
Sample Examination II t a system at equlibriurm aecording to the equation 159 s added to such an equilibrium system at constant volume and temperatare, the total pressure ses and the number of NHs molecules present increases (B) decreases and the number of NHa molecules present Increases remains the same and the rumber of Nils molecules present increases remains the same and the number of NHs molecules present decreases E) increases and the number of NiHs molecules present remains the...
Effect of a Catalyst on Reaction Rate: with a lower Ea than for the uncatalyzed reaction. This is shown as the blue path with Ea in the diagram below t a given temperature, a catalyst increases the rate of a reaction by providing a pathway E (RJ) products Reaction Coordinale Since the potential energy barrier is lower in the presence of a catalyst, a greater fraction of the molecules will have sufficient energy to react. Because the reactants and products...
1. (18 points; 3 points each] Multiple Choice: Circle the best answer i. Consider the following reaction: Xooot THF, A If there are no other changes, what is the effect of doubling the concentration of the starting alcohol on the rate of this reaction? a. No change b. Doubles the rate C. Triples the rate d. Quadruples the rate ii. Which nitrogen compound below would react fastest as a nucleophile in an 5, 2 reaction? NH NH N d. "NH2...
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