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).

Front

What is the boiling point of water?

Back

The boiling point of water is 100°C at standard atmospheric pressure.

Front

What does it mean for a solution to be saturated?

Back

A saturated solution is one in which the maximum amount of solute has been dissolved in the solvent at a given temperature.

Front

What is a supersaturated solution?

Back

A supersaturated solution contains more solute than can normally dissolve at a given temperature, often achieved by heating the solution and then cooling it.

Front

What factors affect the solubility of a substance?

Back

Factors include temperature, pressure (for gases), and the nature of the solute and solvent.

Front

What is the difference between ionic and covalent compounds in terms of solubility?

Back

Ionic compounds tend to be more soluble in water than covalent compounds due to the strong interactions between ions and polar water molecules.

Front

How do you calculate the molarity of a solution?

Back

Molarity (M) is calculated by dividing the number of moles of solute by the volume of solution in liters: M = moles of solute / liters of solution.

Front

What is the molar mass of MgCl2?

Back

The molar mass of MgCl2 is approximately 95.21 g/mol.

Front

How many grams of solute are in a 2.7M solution of MgCl2 in 250mL?

Back

63.5 grams of MgCl2 are dissolved in 250mL of a 2.7M solution.

Front

What is the significance of a heating curve?

Back

A heating curve shows the changes in temperature and state of a substance as it is heated, indicating phase changes such as melting and boiling.