INV 5 H Physical Properties Review 2024

Front

What temperature is required for 40 g of NaCl to completely dissolve in water?

Back

90°C

Front

How many grams of KCl can dissolve in 100 mL of water at 60°C?

Back

45 g

Front

Explain why water and oil do not mix based on the principle of 'like dissolves like'.

Back

Oil is nonpolar and water is polar.

Front

What is the saturation state if 30 g of NaCl dissolve in 100 mL of water at 40 degrees Celsius?

Back

Unsaturated

Front

Which substance is characterized by a high melting point and the ability to conduct electricity in its molten state?

Back

Sodium fluoride (NaF)

Front

Define solubility in the context of physical properties of substances.

Back

Solubility is the maximum amount of a substance that can dissolve in a given amount of solvent at a specific temperature.

Front

What is the relationship between temperature and the solubility of most solids in water?

Back

Generally, the solubility of most solids increases with an increase in temperature.

Front

What does the term 'saturated solution' mean?

Back

A saturated solution is one in which no more solute can dissolve at a given temperature.

Front

What is the significance of polarity in solubility?

Back

Polarity determines how substances interact; polar solvents dissolve polar solutes, while nonpolar solvents dissolve nonpolar solutes.

Front

What is the effect of pressure on the solubility of gases in liquids?

Back

Increased pressure increases the solubility of gases in liquids.