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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

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nandhini123

Answer:

The plate height for benzene is 0.455mm

Explanation:

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

[tex]N=\frac{L}{H}[/tex]

[tex]H=\frac{L}{N}[/tex]

Where, N = theoretical plate

[tex]t_r[/tex] = retention time

[tex]w_{(\frac{1}{2})}[/tex]= 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[tex]t_r[/tex]and[tex]w_{(\frac{1}{2})}[/tex]

Putting the values in the above mentioned formulae

Hence, N = 66049.5

H =[tex]\frac{L}{N}[/tex]

=[tex]\frac{L}{66049.5 }[/tex]

= 0.45mm

Hence, the plate height of benzene is 0.455mm

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