June 2018 Chemistry Regents #70-73

Highlight to reveal answers and explanations

 

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Questions 51-53 Questions 54-56 Questions 57-59 Questions 60-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-76  Questions 77-79  Questions 80-82  Questions 83-85 

 

Other Regents Exams

Question 70-73

 

 

Base your answers to questions 70 through 73 on the information below and on your knowledge of chemistry. 

Methanol can be manufactured by a reaction that is reversible. In the reaction, carbon monoxide gas and hydrogen gas react using a catalyst. The equation below represents this system at equilibrium.

 

70 State the class of organic compounds to which the product of the forward reaction belongs. [1]

Answer-->alcohol

71 Compare the rate of the forward reaction to the rate of the reverse reaction in this equilibrium system. [1]

Answer-->equal rates

72 Explain, in terms of collision theory, why increasing the concentration of H2(g) in this system will increase the concentration of CH3OH(g). [1]

Answer--> more effective collisions

73 State the effect on the rates of both the forward and reverse reactions if no catalyst is used in the system. [1]

Answer-->

Rate of forward reaction: decreases/slower

Rate of reverse reaction: decreases/slower

on to Questions 74-76

 

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Questions 51-53 Questions 54-56 Questions 57-59 Questions 60-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-76  Questions 77-79  Questions 80-82  Questions 83-85 

 

Back to Regents Exams