Question

A student obtained 2.00 g of pure caffeine following recrystallization from a crude sample, which originally weighed 2.56 g. What is the percent recovery of pure caffeine from crude

Answer 1

Answer: 78.125%

Explanation:

From the question, we are informed that a student obtained 2.00g of pure caffeine following recrystallization from a crude sample, which originally weighed 2.56g.

The percent recovery of pure caffeine from crude will be calculated as:

= Mass of pure caffeine / Mass of crude sample × 100

= 2.00 / 2.56 × 100

= 78.125%