Question

Use the W, of 0.121min from the chromatogram above to find the plate height for benzene. a) 0.493 mm b) 0.455mm C) 0.934mm d) 0.439 e) Insufficient information provided N - 5.55 (++) ² = 66049.5 h - 1 - / - 0.454mm

Answer 1

The plate height for benzene is 0.455mm

Step-by-step explanation:

`N=5.54\left(\frac{t r}{w_{(1)/(2)}}\right)^(2)`

`N=(L)/(H)`

`H=(L)/(N)`

Where, N = theoretical plate

`t_r` = retention time

`w_{((1)/(2))}`= Half of the width of the peak at it’s base

L = length of the column

H = Plate height

Since, there is no attached chromatogram so it can’t evaluate the value of
`t_r`and
`w_{((1)/(2))}`

Putting the values in the above mentioned formulae

Hence, N = 66049.5

H =
`(L)/(N)`

=
`(L)/(66049.5 )`

= 0.45mm

Hence, the plate height of benzene is 0.455mm