Exam (elaborations)
Exam (elaborations) 2024 CHEMISTRY LAB 7 - LAB7
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ENTAILS QUESTIONS AND ANSWERS
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, How would you write the conversion reaction from oil to biodiesel?A)Oil + alcohol + catalyst -> biodiesel + glycerol + catalyst
B)Oil + alcohol + catalyst -> biodiesel
C)Biofuel + alcohol + catalyst -> catalyst + biofuel + glycerol
D)Oil + catalyst -> biodiesel + glycerol + alcohol - CORRECT ANSWERS-A)Oil +
alcohol + catalyst -> biodiesel + glycerol + catalyst
Which of the following hazards does not apply for methanol?
A)Flammable
B)Oxidizing
C)Health Hazard
D)Toxic - CORRECT ANSWERS-B)Oxidizing
Which P-sentence indicates why you should work in the fume hood when using
methanol?
A)P363 and P330
B)P301 and P310
C)P210 and P233
D)P260 and P271 - CORRECT ANSWERS-D)P260 and P271
Methanol is volatile because it has a low boiling point. Have a look at the safety sheet.
What is the boiling point of methanol?
A)54 degrees Celsius
B)76 degrees Celsius
C)87 degrees Celsius
D)65 degrees Celsius - CORRECT ANSWERS-D)65 degrees Celsius
Why is it important to work in the fume hood during this step?
A)Methanol gets very volatile at high temperatures.
B)The magnetic stirrer splashes base in all directions
C)Sodium hydroxide is flammable
D)Produced biodiesel is explosive - CORRECT ANSWERS-A)Methanol gets very
volatile at high temperatures.
There is some remaining sodium hydroxide-methanol solution that we have to dispose
of. This solution poses several hazards, which of the following does NOT apply for the
sodium hydroxide methanol solution?
A)Explosive
B)Corrosive
C)Flammable
D)Toxic - CORRECT ANSWERS-A)Explosive
Which of these hazards could be removed by adding small amounts of certain solution?
A)Flammability
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