Reacting Quantities (OCR A-Level Chemistry A): Quizzes

Study of quantitative reactant-product relationships

Use equation to find moles of unknown substance

$24 \text{ dm}^3$ or $24000 \text{ cm}^3$

2:1:2

$\frac{\text{actual yield}}{\text{theoretical yield}} \times 100\%$

Molar mass of the product

Reactant not in excess, gets used up first

$\text{H}_2$ is the limiting reagent

$\frac{\text{molar mass desired products}}{\text{molar mass all products}} \times 100\%$

Atom economy calculated from equation only, assumes 100% yield