Question

What is the quantity of glucose obtained when 68.4 g of sucrose is hydrolyzed in laboratory under ideal condition?
(Molar mass of sucrose = 342 g mol⁻¹)

Options

• 68.4 g

• 198.0 g

• 36.0 g

• 180 g

Answer 1

36.0 g

Explanation:

\[\ce{\underset{\underset{(342 g)}{sucrose}}{C12H22O11} + H2O ->[H^+][(Invertase)] \underset{\underset{(180 g)}{Glucose}}{C6H12O6} + \underset{\underset{(180 g)}{Fructose}}{C6H12O6}}\]

342 g of sucrose gives 180 g of glucose.

∴ 68.4 g of sucrose gives `(180 xx 68.4)/342` = 36 g of glucose