January 2011 Chemistry Regents #60-61

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Questions

Base your answers to questions 60 to 61 on the information below.

The chemical reaction between methane and oxygen is represented by the potential energy diagram and balanced equation below.

60 Which potential energy interval in the diagram represents the activation energy of the forward reaction? [1]

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B

61 Explain, in terms of collision theory, why a lower concentration of oxygen gas decreases the rate of this reaction. [1]

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Less collisions decreases the reaction rate

A lower concentration of oxygen gas decreases the number of effective collisions between O2 molecules and CH4 molecules.

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Questions 1-10 Questions 11-20 Questions 21-30 Questions 31-40 Questions 41-50

Questions 51-53 Questions 54-55 Questions 56-57 Questions 58-59 Questions 60-61 Questions 62-63 Questions 64-65 Questions 66-68 Questions 69-71 Questions 72-74 Questions 75-77 Questions 78-80 Questions 81-83

 
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