Question

Describe how retention time of butanol on a poly (ethylene glycol) column will change with increasing temperature. Use the retention time for butanol in Figure 24-9b as the starting point.

Short answer

NOT GIVEN

Step-by-step solution

relation of retention time with increase in temperature

Based on Figure 24-9b, the retention time$\left({t_r}^{\text{'}}\right)$ of butanol starts at approximately 9 min. With increasing temperature, the${t_r}^{\text{'}}$ of butanol is expected to decrease logarithmically based on the relationship below:

$\log \left({t_r}^{\text{'}}\right)=\frac{a}{T}+b$

where: a and b are constants for butanol on a poly(ethylene glycol) column

final answer

$\log \left(t_r^{\text{'}}\right)=\frac{a}{T}+b$