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How is the molar concentration of solute in stationary phase related to molar concentration of solute in the mobile phase?

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in Analytical Instrumentation by (131k points)
How is the molar concentration of solute in stationary phase related to molar concentration of solute in the mobile phase?

(a) Directly proportional

(b) Inversely proportional

(c) Equal

(d) Not related

This question was posed to me in an online quiz.

My doubt stems from Chromatographic Behaviour of Solutes in chapter Chromatography of Analytical Instrumentation

1 Answer

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Right answer is (a) Directly proportional

The explanation is: In chromatography, molar concentration of solute in stationary phase is directly proportional to molar concentration of solute in mobile phase.

Cs α Cm

Cs = k Cm

‘k’ is the distribution constant.

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