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Class 11ChemistrySome Basic Concepts of ChemistryMole concept and molar massEasy
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If the mole fraction of solute in a solution is 0.4 what is the mole ratio of solute to solvent?

Answer and explanation

Correct answer: 2 to 3

In a binary solution, the mole fractions of solute and solvent add to one. Therefore, solvent mole fraction = 1 − 0.4 = 0.6. The required solute-to-solvent ratio is 0.4:0.6 = 4:6 = 2:3 after simplification. Hence option A is correct. Option B reverses the requested order, and options C and D do not represent the given fractions.

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Mole FractionMole RatioBinary SolutionMole ConceptMole Concept And Molar MassSome Basic Concepts Of ChemistryChemistryClass 11 Mcq
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10 more MCQs
  1. 1How many moles of solute are present in 100 mL of 0.1 molar solution?
  2. 2How many moles of solute are needed in 400 g solvent to make a 2.5 molal solution?
  3. 3A glucose sample has a mass of 18 g and a molar mass of 180 g mol⁻¹. How many moles of glucose are present?
  4. 4A solution has mole fraction of solute 0.2 and the solvent is water. What is the approximate molality of the solution?
  5. 5The mole fraction of solute in water is 0.1. What is the approximate molality of the solution?
  6. 6What is the approximate mole fraction of acid in a 36.5% by mass hydrochloric acid solution?
  7. 7In a binary solution, the mole fraction of solvent is 0.75 and moles of solute are 3. How many moles of solvent are present?
  8. 8The mole percent of solute in a solution is 35 percent. What is the mole fraction of solute?
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  10. 10What is 0.075 percent expressed in ppm?
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