IB Chemistry SL Reactivity 1: What drives chemical reactions? questions

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Question 1

Paper 2Easy6 marks

An ethanol burner used to heat food burns ethanol in a plentiful supply of oxygen. Figure 1 shows the structural formula of ethanol.

CH3CH2OH
(a)

Use Figure 1 to state the molecular formula of ethanol.

[1]
(b)

Write a balanced equation for the complete combustion of ethanol.

[2]
(c)

A sample of 0.350 mol of ethanol burns completely. Using the equation in (b), calculate each amount in mol to three significant figures.

(i)

Oxygen consumed

[1]
(ii)

Carbon dioxide formed

[1]
(d)

Identify the oxidizing agent in the combustion reaction.

[1]

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