Use of amount of substance in relation to masses of pure substances

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Question 4
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Iron reacts with chlorine gas to produce iron(III) chloride.

The balanced equation for the reaction is:

2Fe(s)+3Cl2(g)→2FeCl3(s)2\text{Fe(s)} + 3\text{Cl}_2\text{(g)} \rightarrow 2\text{FeCl}_3\text{(s)}2Fe(s)+3Cl2​(g)→2FeCl3​(s)

Calculate the volume of chlorine gas needed to react completely with 11.2 g11.2\text{ g}11.2 g of iron.

You should calculate:

  • the number of moles of iron used
  • the number of moles of chlorine gas that react with 11.2 g11.2\text{ g}11.2 g of iron
  • the volume of chlorine gas needed.

Relative atomic mass (ArA_rAr​): Fe=56\text{Fe} = 56Fe=56

The volume of 1 mole of gas = 24 dm324\text{ dm}^324 dm3

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Use of amount of substance in relation to masses of pure substances Questions

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