GC Solutions Unit Review

Front

What is the solubility of lead(II) nitrate in water at 30 ºC?

Back

Approximately 66 grams of lead(II) nitrate can dissolve in 100 grams of water at 30 ºC.

Front

Why is crushing sugar cubes before mixing them in water a good suggestion?

Back

Crushing the sugar cube provides more contact between the sugar and water, allowing it to dissolve faster.

Front

What factors increase the rate of dissolving a solid in a liquid?

Back

Stirring the solution, crushing the solute, and raising the temperature of the water increase the rate of dissolving.

Front

What does molarity measure?

Back

Molarity is measured in moles per liter (mols/L).

Front

Which of the following is a base: HCl, H2SO4, KOH, HNO3?

Back

KOH is a base.

Front

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

Back

The solubility of most solids increases as temperature increases.

Front

What is the definition of a solute?

Back

A solute is a substance that is dissolved in a solution.

Front

What is the definition of a solvent?

Back

A solvent is the substance that dissolves the solute in a solution.

Front

What is the effect of stirring on the rate of dissolving?

Back

Stirring increases the rate of dissolving by distributing the solute particles throughout the solvent.

Front

What is the relationship between particle size and the rate of dissolving?

Back

Smaller particle sizes increase the rate of dissolving due to a larger surface area.