Monitoring chemical reactions

Medium

Lead is extracted by heating lead(II) oxide with carbon:

$2PbO+C→2Pb+CO22\text{PbO} + \text{C} \rightarrow 2\text{Pb} + \text{CO}_2$

Explain why this is an example of a redox reaction.

[2]

Calculate the mass of lead that can be made from $25$ tonnes of lead(II) oxide.

$2PbO+C→2Pb+CO22\text{PbO} + \text{C} \rightarrow 2\text{Pb} + \text{CO}_2$

Give your answer to 2 significant figures.

Relative atomic mass ( $A_r$ ): $Pb=207\text{Pb} = 207$ Relative formula mass ( $M_r$ ): $PbO=223\text{PbO} = 223$

[4]

Monitoring chemical reactions Questions