Chemistry 0620 · IGCSE · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

The chemical equation for the reaction of aqueous lead(II) nitrate with aqueous sodium chloride is given below. $\text{Pb(NO}_3)_2\,(aq) + 2\text{NaCl}\,(aq) \rightarrow \text{PbCl}_2\,(s) + 2\text{NaNO}_3\,(aq)$ When $100\,\text{cm}^3$ of aqueous lead(II) nitrate at a concentration of $0.1\,\text{mol dm}^{-3}$ is treated with excess aqueous sodium chloride, what mass of lead(II) chloride is formed?

  • A$1.16\,\text{g}$
  • B$2.42\,\text{g}$
  • C$2.78\,\text{g}$
  • D$3.31\,\text{g}$

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