Rate Theory Bond Broadening Quiz

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Mobile phase composition, stationary phase composition, solute size
Longitudinal diffusion, resistance to mass transfer, multiple path effect (correct)
Temperature change, pressure variation, solute concentration
Column length, column diameter, flow rate

Column temperature and pressure
Column length and column diameter
Diffusion of the solute and the flow rate of the solute through the column (correct)
Mobile phase composition and stationary phase composition

At low flow rates (A) Signup and view all the answers

Mass transfer of solute in mobile or stationary phases (C) Signup and view all the answers

Diffusion of the solute and the flow rate of the solute through the column (C) Signup and view all the answers

At low flow rates (C) Signup and view all the answers

The hindrance encountered by solute molecules in moving from the stationary phase to the mobile phase (A) Signup and view all the answers

$HL = L1 \frac{DM}{V}$ (B) Signup and view all the answers

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Three main factors contribute to zone broadening: longitudinal diffusion, eddy diffusion, and resistance to mass transfer

Degree of band broadening in longitudinal diffusion depends on the ratio of column length to particle diameter
Longitudinal diffusion is not very important in liquid chromatography when the flow rate is high or the column is packed with small particles
Band broadening as a result of longitudinal diffusion depends on the column length, particle diameter, and diffusion coefficient

HL = L1 DM / V represents the equation for band broadening as a result of longitudinal diffusion
HL represents the height equivalent to a theoretical plate
Resistance to mass transfer or mass transfer diffusion refers to the hindrance to the solute molecules' movement in the column