Chemistry 0620 · IGCSE · Formulae

Formulae — practice question

Calcium phosphate is produced when solutions of calcium chloride and sodium phosphate are mixed and react. $x\text{CaCl}_2 + y\text{Na}_3\text{PO}_4 \rightarrow 2\text{Ca}_3(\text{PO}_4)_2 + 12\text{NaCl$ What values of $x$ and $y$ balance the equation?

  • A$x = 2,\ y = 2$
  • B$x = 3,\ y = 4$
  • C$x = 6,\ y = 3$
  • D$x = 6,\ y = 4$

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI