Chemistry 0620 · IGCSE · Formulae

Formulae — practice question

An aluminium reaction is shown. $\;x\text{Al} + y\text{O}_2 + 6\text{H}_2\text{O} \rightarrow x\text{Al(OH)}_3$ What values of $x$ and $y$ make the equation balanced?

  • A$x = 2, y = 3$
  • B$x = 3, y = 2$
  • C$x = 3, y = 4$
  • D$x = 4, y = 3$

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