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Organic Chemistry – Exam with 100% Correct Answers 2024/2025
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A bottle of wine was left open in air. After a few days, the wine tasted of vinegar. Vinegar is a solution of ethanoic acid in water. -ANSWER-Wine contains ethanol. Explain how oxidation causes the wine to taste of vinegar after a few days. [3 marks] - ANSWER-air contains oxygen which oxidise...

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  • October 16, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • organic chemistry exam with 100 correct answers
  • organic chemistry exam stuvia
  • a bottle of wine was left open in air after a few

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Organic Chemistry – Exam with 100% Correct
Answers 2024/2025

Wine contains ethanol.

A bottle of wine was left open in air.

After a few days, the wine tasted of vinegar.

Vinegar is a solution of ethanoic acid in water.

Explain how oxidation causes the wine to taste of vinegar after a few days.

[3 marks] - ANSWER-air contains oxygen

which oxidises ethanol

to produce ethanoic acid



Formula for alkanes - ANSWER-CnH2n+2



Formula for methane - ANSWER-CH4



Formula for ethane - ANSWER-C2H6



Formula for propane - ANSWER-C3H8



Formula for butane - ANSWER-C4H10



Formula for pentane - ANSWER-C5H12



Formula for hexane - ANSWER-C6H14



Homologous series - a group of compounds with: - ANSWER--the same general formula

-the same functional group

-similar chemical properties

, Formula for ethene - ANSWER-C2H4



Formula for propene - ANSWER-C3H6



Formula for butene - ANSWER-C4H8



Test for double bond - ANSWER-Alkenes decolourise bromine water

yellow -> colourless



Saturated - ANSWER-Full of hydrogen no double bonds



Unsaturated - ANSWER-More hydrogen could be added see double bond



Polymer - ANSWER-Long chain molecule made from lots of small molecules joined together



Monomer - ANSWER-Small molecules that join together to make polymers



Formula for methanol - ANSWER-CH3OH



Formula for ethanol - ANSWER-C2H5OH



Formula for propanol - ANSWER-C3H7OH



Formula for butanol - ANSWER-C4H9OH



Uses of alcohols - ANSWER--drinks

-solvents

-fuel

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