Q15E - Chemistry (OpenStax)

Question

Many of the items you purchase are mixtures of pure compounds. Select three of these commercial products and prepare a list of the ingredients that are pure compounds.

Step-by-Step Solution

Answer

The three commercial products, LPG, CNG, and hand sanitizer, are mixtures of pure compounds.

Step 1: Describing the pure substances

Pure substances are substances that have the same composition throughout the mixture. It has a fixed structure and size. Its composition is constant throughout the solution.

Elements and compounds are the classifications of pure substances.

Step 2: Preparing the list of the ingredients that are pure compounds

The following commercial products with their ingredients are

Liquefied petroleum gas (LPG) – These contain propane, propylene, butane, butylenes, and isobutene.

Compressed petroleum gas (CNG) – It contains a larger percentage of methane, nitrogen, carbon dioxide, propane, and some amount of ethane.

Hand sanitizer – It contains ethanol, hydrogen peroxide, glycerol, and water.