Solutions

Front

What is a solution?

Back

A solution is a homogeneous mixture composed of two or more substances, where one substance (the solute) is dissolved in another (the solvent). An example is air, which is a solution of gases.

Front

What can be done to make a powder dissolve faster in a liquid?

Back

Stirring the powder in the liquid increases the interaction between the solute and solvent, facilitating faster dissolution.

Front

How many grams of K2Cr2O7 are soluble in 100 g of water at 95 ºC?

Back

75 grams.

Front

How can you identify a saturated solution?

Back

A saturated solution is identified when no more solute can dissolve, and excess solute collects at the bottom of the container.

Front

Which of the following is an example of a solution?

Back

Coffee is an example of a solution.

Front

What is a solute?

Back

A solute is a substance that is dissolved in a solution. For example, salt is a solute when dissolved in water.

Front

What is a solvent?

Back

A solvent is the substance in which the solute is dissolved to form a solution. Water is often referred to as the universal solvent.

Front

What is the difference between a homogeneous mixture and a heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has a non-uniform composition with distinct phases.

Front

What happens to the solubility of most solids as temperature increases?

Back

The solubility of most solids in liquids increases as the temperature increases.

Front

What is a saturated solution?

Back

A saturated solution is one that contains the maximum amount of solute that can dissolve at a given temperature.