Solutions

What is the effect of temperature on the solubility of most solids in water?

• The solubility of most solids decreases with an increase in temperature.

• The solubility of most solids remains unchanged with temperature variations.

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

• The solubility of most solids is not affected by temperature.

What is the relationship between moles, mass, and molar mass?

• Moles = mass (g) / molar mass (g/mol)

• Moles = molar mass (g/mol) / mass (g)

• Moles = mass (g) * molar mass (g/mol)

• Moles = mass (g) + molar mass (g/mol)

What is the molarity of 1 mole of solute in 1 liter of solution?

• 0.5 M (0.5 moles per liter)

• 1 M (1 mole per liter)

• 2 M (2 moles per liter)

• 0.1 M (0.1 moles per liter)

What is a saturated solution?

• A solution that contains more solute than it can hold at a given temperature and pressure.

• A solution in which no more solute can dissolve at a given temperature and pressure.

• A solution that has reached its boiling point.

• A solution that is completely solid at room temperature.

What is the most soluble substance at 0 ºC among KI, NaNO3, NaCl, and Ce2(SO4)3?

• KI

• NaNO3

• NaCl

• Ce2(SO4)3

What is molarity?

• A measure of temperature defined as degrees Celsius (°C).

• A measure of concentration defined as the number of moles of solute per liter of solution (mol/L).

• A measure of pressure defined as force per unit area (Pa).

• A measure of volume defined as the amount of space an object occupies (L).

What is the significance of the term 'dilution'?

• Dilution refers to the process of increasing the concentration of a solute in a solution.

• Dilution refers to the process of reducing the concentration of a solute in a solution, usually by adding more solvent.

• Dilution is the process of separating a solute from a solvent.

• Dilution is a method used to measure the temperature of a solution.

What is a solute?

• A substance that is dissolved in a solution.

• A liquid that dissolves other substances.

• A mixture of two or more substances.

• A solid that cannot dissolve in any liquid.

What is the formula to calculate molarity?

• Molarity (M) = moles of solute / liters of solution.

• Molarity (M) = liters of solution / moles of solute.

• Molarity (M) = moles of solute x liters of solution.

• Molarity (M) = moles of solute + liters of solution.

What is the difference between a concentrated solution and a dilute solution?

• A concentrated solution has a low amount of solute relative to the solvent, while a dilute solution has a high amount of solute relative to the solvent.

• A concentrated solution has a high amount of solute relative to the solvent, while a dilute solution has a low amount of solute relative to the solvent.

• A concentrated solution contains no solute, while a dilute solution contains a small amount of solute.

• A concentrated solution is always solid, while a dilute solution is always liquid.