Purity, formulations and chromatography

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Question 6
Easy

A student analyzes a rubbing alcohol mixture. Table 1 shows the mass of each substance in a sample of this mixture.

Table 1

SubstanceMass (g\text{g}g)
Propan-2-ol141.6141.6141.6
Water45.245.245.2
Methyl salicylate5.45.45.4
Additives2.82.82.8
a.

What general chemical term is given to a mixture that has been designed as a useful product, such as rubbing alcohol?

[1]
b.

Calculate the percentage by mass of propan-2-ol in this sample of rubbing alcohol. Give your answer to 1 decimal place.

[3]
c.

Propan-2-ol can be oxidized to form propanone. What type of reagent reacts with propan-2-ol to bring about this change?

[1]

Purity, formulations and chromatography Questions

  1. GCSE
  2. /Chemistry
  3. /Purity, formulations and chromatography