Arrange the following compounds as directed : (any Two) (i) In decreasing order of basic strength in aqueous solution : $\text{C}_2\text{H}_5\text{NH}_2, (\text{C}_2\text{H}_5)_2 \text{NH}, (\text{C}_2\text{H}_5)_3 \text{N}$ (ii) In increasing order of solubility in water : $(\text{C}_2\text{H}_5)_2 \text{NH}, \text{C}_2\text{H}_5\text{NH}_2, \text{C}_6\text{H}_5\text{NH}_2$ (iii) In decreasing order of their pKb values : $\text{C}_6\text{H}_5\text{NH}_2, \text{C}_2\text{H}_5\text{NH}_2, \text{NH}_3$