June 2013 Chemistry Regents #63-65

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

Question 51-53 Questions 54-56 Questions 57-59 Questions 60-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-77  Questions 78-80  Questions 81-82  Questions 83-85

 

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  Base your answers to questions 63 through 65  on the information below.

 

There are several isomers of C6H14. The formulas and boiling points for two of these isomers are given in the table below.

63 Identify the homologous series to which these isomers belong. [1]

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alkanes

OR  CnH2n+2

( I have no idea why this 2nd one is allowed as an answer)

64 Write the empirical formula for isomer 1. [1]

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C3H7

65 Explain, in terms of intermolecular forces, why isomer 2 boils at a lower temperature than isomer 1. [1]

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Isomer 2 boils at a lower temperature because it has weaker intermolecular forces than isomer 1.

The intermolecular forces in isomer 1 are stronger.

on to Questions 66-69

 

 

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

Question 51-53 Questions 54-56 Questions 57-59 Questions 60-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-77  Questions 78-80  Questions 81-82  Questions 83-85

 

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