A sample of a chlorofluorocarbon (CFC) contains 0.24 g0.24\text{ g}0.24 g of carbon, 0.57 g0.57\text{ g}0.57 g of fluorine, and 0.355 g0.355\text{ g}0.355 g of chlorine.
Show, by calculation, that the empirical formula of the CFC is C2F3Cl\text{C}_2\text{F}_3\text{Cl}C2F3Cl.
The relative formula mass of the CFC is 233233233. Deduce the molecular formula of the CFC.
The displayed formula of another CFC is:
F∣F−C−Cl∣F\begin{array}{ccccc} && \text{F} && \\ && | && \\ \text{F} &-& \text{C} &-& \text{Cl} \\ && | && \\ && \text{F} && \\ \end{array}F−F∣C∣F−ClDraw a dot-and-cross diagram of this CFC. Show only the outer electrons.
80 exam-style questions on Edexcel IGCSE Chemistry Chemical formulae, equations and calculations. Each one has a worked solution and a mark scheme showing where the marks go.