If 4.21 × 10^{− 3}moles of Ca²⁺react with excess PO₄^{3 −}to form calcium phosphate, how many moles of the solid can form?

Question

Quizplus · Accepted Answer

The balanced chemical equation for the formation of calcium phosphate is 3Ca²⁺ + 2PO₄³⁻ → Ca₃(PO₄)₂. Thus, 3 moles of Ca²⁺ produce 1 mole of Ca₃(PO₄)₂. Therefore, 4.21 × 10⁻³ moles of Ca²⁺ will produce (4.21 × 10⁻³ moles) / 3 = 1.40 × 10⁻³ moles of Ca₃(PO₄)₂.

If 421 × 10 − 3moles of Ca2+react with Excess PO43

If 421 × 10^{− 3}moles of Ca²⁺react with Excess PO₄³