Duralumin is an alloy made up only of aluminium, copper, magnesium and manganese metals in a mixture.
Table 4.1 gives data about the four metals present in duralumin.
Plan an investigation to determine the percentage by mass of aluminium in a sample of duralumin. Your plan must show how you will work out the percentage by mass of aluminium in duralumin.
A powdered sample of duralumin alloy, dilute hydrochloric acid, dilute nitric acid, distilled water and standard laboratory apparatus are supplied to you.
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Plan an investigation to determine the percentage by mass of aluminium in a sample of duralumin. Your plan must show how you will work out the percentage by mass of aluminium in duralumin. You are supplied with a powdered sample of the alloy duralumin, dilute hydrochloric acid, dilute nitric acid, distilled water and standard laboratory apparatus.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “MP1 determine the mass of duralumin” …