Chemistry - Eudiometry Question with Solution | TestHub

(i) $2\mathrm{CO}+{\mathrm{O}}_2\to 2{\mathrm{CO}}_2$

2a a 0

0 0 2a

${\mathrm{V}}_{\mathrm{i}}=3\mathrm{a}{\mathrm{V}}_{\mathrm{f}}=2\mathrm{a}$

$\Delta \mathrm{v}=3\mathrm{a}-2\mathrm{a}=\mathrm{a}$

$\frac{\mathrm{a}}{3\mathrm{a}}\times 100=33.3\%$

(ii) ${\mathrm{CH}}_{4(\mathrm{g})}+2{\mathrm{O}}_{2(\mathrm{g})}\to {\mathrm{CO}}_{2(\mathrm{g})}+2{\mathrm{H}}_2{\mathrm{O}}_{(\mathrm{l})}$

10 30

$0$ $10$ $10$

${\mathrm{V}}_{\mathrm{i}}=40\mathrm{mL}$

${\mathrm{V}}_{\mathrm{f}}=20\mathrm{mL}$

$\therefore \frac{\Delta \mathrm{v}}{\mathrm{v}}\times 100=\frac{20}{40}\times 100=50\%$

(iv) ${\mathrm{N}}_2+3{\mathrm{H}}_2\to 2{\mathrm{NH}}_3$

a $3\mathrm{a}$ 0

$0$ $0$ 2a

$\Delta \mathrm{v}=2\mathrm{a}$

$\frac{a}{2a}\times 100=50\%$