Topical Questions These questions are keyed to the major topics in the chapter. Usually...

Topical Questions

These questions are keyed to the major topics in the chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.

Acetylene can be made by reacting calcium carbide with water.

Assume that you place 2.65 g CaC₂ in excess water and collect the acetylene over water. The volume of the acetylene and water vapor is 795 mL at 25.0 °C and a barometric pressure of 735.2 mm Hg. Calculate the percent yield of acetylene. The vapor pressure of water at 25 °C is 23.8 mm Hg.