Question

1. Ether, (C₂H₅)₂O, which was originally used as an anesthetic but has been replaced by safer and more effective medications, is prepared by the reaction of ethanol with sulfuric acid.

What is the percent yield of ether if 2.13 L (d = 0.7134 g/mL) is isolated from the reaction of 2.750 L of C₂H₅OH (d = 0.7894 g/mL)?

    2 C₂H₅OH + H₂SO₄ → (C₂H₅)₂O + H₂SO₄ · H₂O

2. Urea, which has the chemical formula (NH₂)₂CO, is a fertilizer that can be prepared by reacting ammonia (NH₃) with carbon dioxide (CO₂). Given the following chemical equation, what is the theoretical yield of urea (in grams) if 6.24 mol ammonia is the limiting reactant?

2 NH₃(g) + CO₂(g) → (NH₂)₂CO(aq) + H₂O(l)

Answer 1