Question

1. The pH of a 9.10×10^-3 M solution of a weak monoprotic acid is 4.90. Calculate pK_a for this monoprotic acid to two decimal places.

2. Using the table of values in your Concepts textbook, arrange the following atoms on the basis of their affinity for electrons (1 smallest, 5 largest).

1 2 3 4 5  Na
1 2 3 4 5  Al
1 2 3 4 5  Ne
1 2 3 4 5  Ge
1 2 3 4 5  K

Answer 1