Discussion:
Rate Constant and Periodic Trends
1. For the following balanced reaction, determine the rate expression and the rate constant, k, for it using the data given below.
2A + B +C yields D + 2E + F
Experiment [A] mol/L [B] mol/L [C] mol/L Rate (M sec-1)
1 1.50 x 10-3 2.00 x 10-3 1.20 x 10-4 6.50 x 10-5
2 1.50 x 10-3 2.83 x 10-3 1.20 x 10-4 1.30 x 10-4
3 3.00 x 10-3 2.00 x 10-3 2.40 x 10-4 3.25 x 10-5
4 3.00 x 10-3 2.00 x 10-3 3.00 x 10-4 2.08 x 10-5
2. The compound boron nitride (BN) is comparable in hardness to diamond. Based on periodic trends, atomic interactions, bonding, etc., is this expected. Please explain the answer.