(solution) I have an application multi-part question on HPLC First step: In

(solution) I have an application multi-part question on HPLC First step: In

I have an application multi-part question on HPLC

First step:

In HPLC doubling the length of the analytical column increases efficiency of the separation by a factor of what?

4

3

2

1.5

Second step:

 In HPLC which factor would be least effective in improving resolution of overlapping peaks?

                Change functionality of stationary phase

                Change solvent pH

                Increase column length

                Decrease mobile phase/flow rate

Third step:
In HPLC, which factor would be least effective in improving the resolution of overlapping peaks?

Change functionality of stationary phase

Change solvent Ph

Increase column length

Decrease mobile phase flow rate