Homework Answers
e) II is lower.
Catalyst is a substance that presents in reaction to change the reaction rate by forming an alternative pathway of the reaction mechanism. Catalysts are found at the end of the reaction with no change in it. Catalyst forms a different way by forming lower energy Transition State. As a result of this lower energy transition State reaction is happened at a higher rate.
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question 19: which part of the following energy diagram is
changed when a catalyst is added,...
11) Which of the following is true of a catalyst? a) A catalyst is a substance...
11) Which of the following is true of a catalyst? a) A catalyst is a substance b) A catalyst, when added to a reaction system, increases the rate at which the reaction occurs c) A catalyst is neither produced nor consumed as a reaction proceeds d) Both b and c e) Both a and b and c 12) In the Arrhenius equation, the value for A, the pre-exponential factor, depends on a) the collision frequency (number of collisions per unit...
Question 61 (1 point) What shift in equilibrium occurs when a catalyst is added to a...
Question 61 (1 point) What shift in equilibrium occurs when a
catalyst is added to a reaction? Shifts toward products OShifts
towards reactants Depends on the type of catalyst O No shift in
equilibrium occurs
Question 61 (1 point) What shift in equilibrium occurs when a catalyst is added to a reaction? Shifts toward products Shifts towards reactants Depends on the type of catalyst No shift in equilibrium occurs Question 62 (1 point) A solution with a pH of 1...
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
I selected the second answer and it was incorrect. QUESTION 2 Which is true of a...
I selected the second answer and it was
incorrect.
QUESTION 2 Which is true of a free energy diagram for an SN2 reaction? 0 It includes a carbocation intermediate. 0 It includes intermediates that are higher in energy than reactants or products. o It includes one transition state. o It always shows that the reaction is net exothermic. 0 The reactants are always found at a lower energy than the products.
Which of the following statements are true in regards to the following reaction coordinate diagram? Free...
Which of the following statements are true in regards to the following reaction coordinate diagram? Free Energy AE AE AE4 ΔΕ Progress of Reaction O There will be a higher concentration of reactants than products at equilibrium. okey > 1 The reactants are more stable than the products. 0 There will be a higher concentration of products than reactants at equilibrium. Keq < 1 O The products are more stable than the reactants.
QUESTION 5 Which of the following statements about a catalyst is true? O Catalysts increase the...
QUESTION 5 Which of the following statements about a catalyst is true? O Catalysts increase the rate of the reaction. Catalysts cause a system at equilibrium to shift towards the reactants. o Catalysts cause a system at equilibrium to shift towards the products. Catalysts increase the activation energy of a reaction. Catalysts decrease the rate of the reaction.
When water is added to CH_3 = CH_2 using H^+ as a catalyst, the product is:...
When water is added to CH_3 = CH_2 using H^+ as a catalyst, the product is: d) there is no reaction The IUPAC name of is a) 4-methyl-3-pentanol b) 2-melhyl-3-pentanol c) 1, 1-dimethyl-2-butanol d) 3-hydroxyisohexane Which of these has the highest boiling point? a) CH_3 CH_2 CH_3 b) CH_3 CH_2 CH_2 CH_3 c) CH_3 CH_2 OH d) CH_3-O-CH_3 The product of the reaction is d) no reaction take place Which statement about enzymes is true? a) Enzymes cause the equilibrium...
QUESTION 5 Which of the following statements about a catalyst is true? O Catalysts cause a...
QUESTION 5 Which of the following statements about a catalyst is true? O Catalysts cause a system at equilibrium to shift towards the products. O Catalysts cause a system at equilibrium to shift towards the reactants. o Catalysts decrease the rate of the reverse reaction. O Catalysts decrease the rate of the forward reaction. o Catalysts decrease the activation energy of a reaction.
4. An energy diagram for electrophilic aromatic substitution of benzene with Br2 with FeBr3 as catalyst...
4. An energy diagram for electrophilic aromatic substitution of benzene with Br2 with FeBr3 as catalyst below. The rate-limiting step is formation of the sigma complex (Step 1). Generally, any factor that stabilizes the sigma complex also stabilizes the transition-state leading to that complex. This effect leads to a lower transition-state energy and a faster reaction. rate-limiting transition state reactants + Br + FeBrz Η Br FeBr + O energy intermediate products Br + HBr + FeBr 3 -45 kJ/mol...
48. If the conversion of A to B is slow and B to C is fast, what is the rate equation for this reaction? A) Rate =...
48. If the conversion of A to B is slow and B to C is fast, what is the rate equation for this reaction? A) Rate = K[(CH3CHCI][H20] B) Rate - K[(CH3)2CHCI] C) Rate = K[(CH3)CH] [H0] D) Rate = {[(CH3)2CH] 49. Which of the following statements about a catalyst is true? A) A catalyst accelerates a reaction by changing the amount of reactant and product at equilibrium B) A catalyst accelerates a reaction by lowering the energy of activation...
11) Which of the following is true of a catalyst? a) A catalyst is a substance b) A catalyst, when added to a reaction system, increases the rate at which the reaction occurs c) A catalyst is neither produced nor consumed as a reaction proceeds d) Both b and c e) Both a and b and c 12) In the Arrhenius equation, the value for A, the pre-exponential factor, depends on a) the collision frequency (number of collisions per unit...
Question 61 (1 point) What shift in equilibrium occurs when a
catalyst is added to a reaction? Shifts toward products OShifts
towards reactants Depends on the type of catalyst O No shift in
equilibrium occurs
Question 61 (1 point) What shift in equilibrium occurs when a catalyst is added to a reaction? Shifts toward products Shifts towards reactants Depends on the type of catalyst No shift in equilibrium occurs Question 62 (1 point) A solution with a pH of 1...
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
I selected the second answer and it was
incorrect.
QUESTION 2 Which is true of a free energy diagram for an SN2 reaction? 0 It includes a carbocation intermediate. 0 It includes intermediates that are higher in energy than reactants or products. o It includes one transition state. o It always shows that the reaction is net exothermic. 0 The reactants are always found at a lower energy than the products.
Which of the following statements are true in regards to the following reaction coordinate diagram? Free Energy AE AE AE4 ΔΕ Progress of Reaction O There will be a higher concentration of reactants than products at equilibrium. okey > 1 The reactants are more stable than the products. 0 There will be a higher concentration of products than reactants at equilibrium. Keq < 1 O The products are more stable than the reactants.
QUESTION 5 Which of the following statements about a catalyst is true? O Catalysts increase the rate of the reaction. Catalysts cause a system at equilibrium to shift towards the reactants. o Catalysts cause a system at equilibrium to shift towards the products. Catalysts increase the activation energy of a reaction. Catalysts decrease the rate of the reaction.
When water is added to CH_3 = CH_2 using H^+ as a catalyst, the product is: d) there is no reaction The IUPAC name of is a) 4-methyl-3-pentanol b) 2-melhyl-3-pentanol c) 1, 1-dimethyl-2-butanol d) 3-hydroxyisohexane Which of these has the highest boiling point? a) CH_3 CH_2 CH_3 b) CH_3 CH_2 CH_2 CH_3 c) CH_3 CH_2 OH d) CH_3-O-CH_3 The product of the reaction is d) no reaction take place Which statement about enzymes is true? a) Enzymes cause the equilibrium...
QUESTION 5 Which of the following statements about a catalyst is true? O Catalysts cause a system at equilibrium to shift towards the products. O Catalysts cause a system at equilibrium to shift towards the reactants. o Catalysts decrease the rate of the reverse reaction. O Catalysts decrease the rate of the forward reaction. o Catalysts decrease the activation energy of a reaction.
4. An energy diagram for electrophilic aromatic substitution of benzene with Br2 with FeBr3 as catalyst below. The rate-limiting step is formation of the sigma complex (Step 1). Generally, any factor that stabilizes the sigma complex also stabilizes the transition-state leading to that complex. This effect leads to a lower transition-state energy and a faster reaction. rate-limiting transition state reactants + Br + FeBrz Η Br FeBr + O energy intermediate products Br + HBr + FeBr 3 -45 kJ/mol...
48. If the conversion of A to B is slow and B to C is fast, what is the rate equation for this reaction? A) Rate = K[(CH3CHCI][H20] B) Rate - K[(CH3)2CHCI] C) Rate = K[(CH3)CH] [H0] D) Rate = {[(CH3)2CH] 49. Which of the following statements about a catalyst is true? A) A catalyst accelerates a reaction by changing the amount of reactant and product at equilibrium B) A catalyst accelerates a reaction by lowering the energy of activation...
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