An engineer investigated the synthesis of titanium chloride by reacting pure titanium metal with chlorine gas.
The word equation for the reaction is:
titanium+chlorine→titanium chloride \text{titanium} + \text{chlorine} \rightarrow \text{titanium chloride} titanium+chlorine→titanium chlorideThe results of the masses recorded during the reaction are shown in the table below:
| Mass in g\text{g}g | |
|---|---|
| Crucible and lid | 18.4018.4018.40 |
| Crucible, lid and titanium | 19.6019.6019.60 |
| Crucible, lid and titanium chloride | 23.1523.1523.15 |
Calculate the simplest whole number ratio of:
moles of titanium atoms:moles of chlorine atoms \text{moles of titanium atoms} : \text{moles of chlorine atoms} moles of titanium atoms:moles of chlorine atomsDetermine the balanced chemical equation for the reaction.
Relative atomic masses (ArA_rAr): Cl=35.5\text{Cl} = 35.5Cl=35.5, Ti=48\text{Ti} = 48Ti=48
38 exam-style questions on AQA GCSE Chemistry 3.2 Use of amount of substance in relation to masses of pure substances, covering 3.2.1 Moles (HT only), 3.2.2 Amounts of substances in equations (HT only), 3.2.3 Using moles to balance equations (HT only), 3.2.4 Limiting reactants (HT only), and 3.2.5 Concentration of solutions. Each one has a worked solution and a mark scheme showing where the marks go.