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Free Solvent Extraction MCQs with Answers

3 Solvent Extraction MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.

Solvent extraction separates a substance by distributing it between two immiscible liquids according to its solubility and partition coefficient. The topic covers selecting suitable solvents, use of a separating funnel, acid-base extraction, phase identification, drying and evaporation, and why several small extractions usually recover more solute than one large extraction.

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3 questions

1. _ extraction is controlled by partition law.

  • A. Iodine.
  • B. Benzoic acid.
  • C. Solvent.
  • D. Stationery.

Explanation: Solvent extraction is an equilibrium process controlled by distribution law or partition law. It states that a solute distributes itself between two immiscible liquids in a constant ratio of concentrations irrespective of the amount of solute added. The law is based on experimental evidence.

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Correct answer: Solvent.

2. Which one is the separating technique:

  • A. Deliquescence
  • B. Fluorescence
  • C. Phosphorescence
  • D. Solvent extraction

Explanation: Solvent extraction is used for separation of mixtures

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Correct answer: Solvent extraction

3. The partition coefficients of Iodine distribution between two immiscible liquids, water and carbon (tetrachloride) is given below:Choose the correct statement about the system:

  • A. Iodine is extracted from CCl4 layer by water
  • B. Iodine is extracted from aqueous layer by CCl4
  • C. Iodine is more soluble in water than CCl4
  • D. The value of K depends on the amount of Iodine added

Explanation: Iodine vastly prefers to dissolve in CCl4 , thus it migrates from the aqueous (H2O) phase into the non-aqueous (CCl4) phase , thus we say that CCl4 extracts the iodine from the aqueous phase.

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Correct answer: Iodine is extracted from aqueous layer by CCl4
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Solvent Extraction MCQs: common questions

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There are 3 Solvent Extraction MCQs in the Chemistry bank, shown ten to a page with the correct answer and an explanation on each.

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