MIXTURES/SOLUBILITY
What are the 2 types of mixtures?
Increasing temperature usually causes the solubility of gases in water to?
Decrease
When a given volume of a solvent has dissolved, the maximum number of solute particles, we say the solution is what?
Saturated
What unit is used to measure the concentration of a solution in moles per litre.
Molarity
What are the 2 types of Mixture, and 2 types of substances?
Homogeneous mixture, heterogeneous mixture, element, compound.
What is a solute?
Increasing temperature usually causes the solubility of most solids in water to do?
increase
If more sugar can still dissolve in a cup of tea, what kind of solution is it?
Unsaturated
What happens when water is added to a solution
Dilution
What term describes how much solute is present in a certain volume of solution?
Concentration
Which of the following is a heterogenous mixture?
1. Salt water
2. Soil
3. Water
4. Oxygen
Soil
This phrase explains why oil does not dissolve well in water.
Like dissolves in like
What usually happens to the solubility of most solid substances when the temperature of water increases?
Solubility increases
What are the two formulas are used to calculate molarity and dilution problem?
M=n/V and M1V1=M2V2
Compounds that dissolve in water and conduct electricity are called?
electrolytes
What states are the solvent and solute in a can of soda?
Solute-Gas
Solvent-Liquid
What factor has little effect on the solubility of most solids and liquids?
Pressure
A solution containing 36 g of NaCl dissolved in 100 g of water at 20°C is considered what type of solution if no more NaCl will dissolve.
What is the final molarity when 50.0 mL of 2.0 M HCl is diluted to a total volume of 200.0 mL?
0.50
A student dissolves 0.25 mol of CaCl₂ in water and it fully dissociates. How many total moles of ions are produced?
0.75mol ions
When Sodium chloride dissolves in water, it separates into ions, while Hydrochloric acid forms ions by reacting with water. What two terms describe these processes?
Dissociation (NaCl) and Ionization (HCl)
Polar solutes dissolve best in solvents with what same characteristic
Polarity
A solution that contains more dissolved solute than normally possible at a certain temperature is called what type of solution?
Super saturated
A student dilutes a solution containing 0.150 mol of NaCl to a final volume of 300.0 mL. What is the molarity of the final solution (in mol/L)?
300.0 mL = 0.300 L
A 0.40 mol sample of aluminum sulfate, Al₂(SO₄)₃, is completely dissolved in water. Assuming full dissociation, how many total moles of ions are produced in solution?
Al₂(SO₄)₃ → 2Al³⁺ + 3SO₄²⁻ = 5 ions per formula unit
0.40×5=2.0 mol ions