Which of the following bases is the weakest?
(CH3)2NH , Kb = 5.1 x 10–4
ClO–, Kb = 2.9 x 10–7
SO42–, Kb = 8.3 x 10–13
Which has the smallest number?
To determine the weakest base among the given options, we need to compare their base dissociation constants (Kb). The base with the smallest Kb value will be the weakest.
Let's compare the Kb values for each option:
1. (CH3)2NH, Kb = 5.1 x 10–4
2. ClO–, Kb = 2.9 x 10–7
3. SO42–, Kb = 8.3 x 10–13
Comparing the values, we can see that the Kb value of ClO– (2.9 x 10–7) is smaller than that of (CH3)2NH (5.1 x 10–4). Similarly, the Kb value of ClO– is smaller than that of SO42– (8.3 x 10–13).
Therefore, the base with the smallest Kb value (2.9 x 10–7) is ClO–. Hence, ClO– is the weakest base among the given options.