Question

which of the following bases is the weakest?
(CH3)2NH, Kb=5.1 x 10^-4
CIO-, Kb=2.9 x 10^-7
SO4^2-, Kb=8.3 x 10^-13

Answer 1

@Preetha

Answer 2

@abb0t

Answer 3

remember that the \(K_B\) of a base is a ratio of product/reactant.

When the base dissociates in water:\[:B(aq) + H-OH(l) \rightleftharpoons BH^{+1}(aq) + OH^{-1}(aq)\]the \(K_B\) is\[K_B = \frac{[BH^{+1}]*[OH^{-1}]}{[B:]}\]

Which \(ratio\) is the smallest will tell you which base is the \(weakest\)

Answer 4

so is it SO4^2-?

Answer 5

since that equals 8.3 E-13?

Answer 6

it is

Answer 7

Yay! Thank you so much!!

Answer 8

YW