Q1) Chromatography is a laboratory technique for the separation of coloured components of a mixture. The mixture is dissolved in a fluid called mobile phase, which carries it through a structure holding another material called stationary phase. The various constituents of mixture travel at a different speeds, causing them to separate. In paper chromatography, pigments are separated on the basis of force of adsorption. The compound having stronger force of attraction with paper moves slowly. (a) Which colour has strongest force of attraction with the paper? (b) Which colour has weakest force if attraction with paper? (c) Observe the given figure and calculate Rf value for blue, purple and red pigments.
Answers
Answer: Chromatography is a laboratory technique for the separation of a mixture. The mixture is dissolved in a fluid called the mobile phase, which carries it through a structure holding another material called the stationary phase. The various constituents of the mixture travel at different speeds, causing them to separate. The separation is based on differential partitioning between the mobile and stationary phases. Subtle differences in a compound's partition coefficient result in differential retention on the stationary phase and thus affect the separation.
Chromatography may be preparative or analytical. The purpose of preparative chromatography is to separate the components of a mixture for later use, and is thus a form of purification. Analytical chromatography is done normally with smaller amounts of material and is for establishing the presence or measuring the relative proportions of analytes in a mixture. The two are not mutually exclusive.
Explanation:
Answer:
chromotograhy is techniq coloured components in mixture.
Explanation:
That is
separation of*★dyes from pigment
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