Reactions of alcohols and carboxylic acids

Name this molecule.

• ethanol

• ethanoic acid

• propanol

• propanoic acid

Answer explanation

There are 3 carbons, so the prefix is pro!

Name this molecule.

• Methanol

• Methanoic acid

• Ethanoic acid

• Methenoic acid

Answer explanation

If it has one carbon, the prefix is meth!

Something that ends in -ene is an ....................

Draw ethanoic acid

What observations would I see if sodium reacted with ethanol?

• Sodium floats

• Sodium sinks

• Effervescence (bubbling) occurs

• The solution turns from colourless to blue

How and why is the reaction between magnesium and ethanoic acid different to magnesium and nitric acid?

• It reacts faster because it is a weaker acid than HNO3.

• It reacts faster because it is a stronger acid than HNO3.

• It reacts slower because it is a weaker acid than HNO3.

• It reacts slower because it is a stronger acid than HNO3.

What is the word equation for the reaction between sodium and butanol?

• Sodium + butanol --> sodium oxide + hydrogen

• Sodium + butanol --> sodium ethoxide + hydrogen

• Sodium + butanol --> sodium ethoxide + water

• Sodium + butanol --> sodium butoxide + hydrogen

Why do stronger acids react faster than weaker acids?

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What numbers in front of the molecule would balance this equation?

_(a)_Na + _(b)_C3H7COOH --> _(c)_C3H7COONa + _(d)_H2

• a = 2

  b = 2

  c = 2

  d = 1

• a = 1

  b = 2

  c = 1

  d = 1

• a = 1

  b = 2

  c = 2

  d = 1

• a = 1

  b = 2

  c = 2

  d = 1

If Mr T used 2g of sodium to react with excess propanol, what mass of hydrogen does he produce?

2Na + 2C3H7OH --> 2C3H7ONa + H2

• 0.0870g

• 0.174g

• 4.60g

• 0.0435g