August 2016 Chemistry Regents #81-85

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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 54-55 Questions 56-59 Questions 60-63 Questions 64-65 Questions 66-69 Questions 70-73 Questions 74-76  Questions 77-80  Questions 81-85

 

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Question 81-85

 

  Base your answers to questions 81 through 85 on the information below and on your knowledge of chemistry.

In industry, ethanol is primarily produced by two different reactions. One process involves the reaction of glucose in the presence of an enzyme that acts as a catalyst. The equation below represents this reaction.

In another reaction, ethanol is produced from ethene and water. The equation below represents this reaction in which H2SO4 is a catalyst.

Industrial ethanol can be oxidized using a catalyst to produce ethanal. The equation representing this oxidation is shown below.

81 Identify the element that causes the reactant in equation 1 to be classified as an organic compound. [1]

Answer--> C

82 Identify the type of organic reaction represented by equation 1. [1]

Answer--> fermentation

83 Explain why the hydrocarbon in equation 2 is unsaturated. [1]

Answer-->  not all single bonds

There is a double carbon-carbon bond in an ethene molecule.

84 Explain, in terms of intermolecular forces, why ethanol has a much higher boiling point than ethene, at standard pressure. [1]

Answer--> IMF for ethanol is stronger.

85 Draw a structural formula for the organic product in equation 3. [1]

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Conversion Table Aug 2016

raw score (out of 85) scale score (your grade)
79 91
78 89
74 85
70 80
50 65

Other Regents Exams

 

 

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 54-55 Questions 56-59 Questions 60-63 Questions 64-65 Questions 66-69 Questions 70-73 Questions 74-76  Questions 77-80  Questions 81-85

 

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