CHM 2046C Module Nine Sample Exam

Part F: Concentration-Time Relationships Half Life 1^st Order 10 pts

Use the following t_½ = 0.693/k to solve:

Sucrose, C₁₂H₂₂O₁₁, decomposes to fructose and glucose in acid solution with the rate law:

Rate = k[C₁₂H₂₂O₁₁] k = 0.208 h^-1 at 25 ^oC

What amount of time is required for 75.0% of the initial concentration of sucrose to decompose?

87.5%?

93.75% ?

Read Pages 15.4 712-716. Addition Problems:#7-10