When you decrease the diameter of the stationary phase particles and make them more uniform, in HPLC, which term or terms of the van Deemter Equation is or are minimized?

C-term

Explanation:

A correlation between plate height and mobile phase velocity is known as the van Deemter equation.

Where;

H is the plate height

A  is the eddy diffusion term

B is the longitudinal diffusion term

C is the resistance to mass transfer coefficient

u is the linear velocity

Here C-term describes the mass transfer of sample components between the stationary phase and the mobile phase during separation. One of the major factor affecting C-term is the particle size, changing the diameter equally changes the particle size.

The answer is C-term

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