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  1. Problems
  2. /Mixtures and Solutions
  3. /Separation of Mixtures

Separation of Mixtures

Chemistry
+ Upload a Problem
More in Mixtures and SolutionsMixtures, Solutions and ColloidsSeparation of MixturesElements, Compounds and Changes
10 problems
Type:
1.
Air has about 78 % nitrogen, 21 % oxygen and 1 % other gases by volume.
High School (9–10), General · Separation of MixturesStemPy LabStemPy Lab
Medium
2.
100 mL of a mixture of methanol (boiling point 338 K) and water (373 K) is distilled.
High School (9–10), General · Separation of MixturesStemPy LabStemPy Lab
Medium
3.
Simple distillation needs boiling points more than about 25 K apart.
High School (9–10), General · Separation of MixturesStemPy LabStemPy Lab
Easy
4.
A sample of alum has some sand and some common salt in it.
High School (9–10), General · Separation of MixturesStemPy LabStemPy Lab
Medium
5.
Three known dyes have these Rf values in a solvent: dye A 0.25, dye B 0.48, dye C 0.82.
High School (9–10), General · Separation of MixturesStemPy LabStemPy Lab
Medium
6.
A dye has an Rf of 0.42 in a solvent. The solvent front moves 11.5 cm.
High School (9–10), General · Separation of MixturesStemPy LabStemPy Lab
Medium
7.
In a chromatography experiment, the solvent front moves 12.5 cm from the starting line, and one…
High School (9–10), General · Separation of MixturesStemPy LabStemPy Lab
Easy
8.
A 50 g mixture has iron filings, sand and common salt.
High School (9–10), General · Separation of MixturesStemPy LabStemPy Lab
Medium
9.
A mixture has sand, salt and water. Describe how to get the sand, the salt and the water as three…
High School (9–10), General · Separation of MixturesStemPy LabStemPy Lab
Medium
10.
Choose a method to separate each mixture, and name the property it uses.
High School (9–10), General · Separation of MixturesStemPy LabStemPy Lab
Easy