Solutions

Vocabulary

100

A substance that is dissolved in a solvent

Solute

200

a base that only partially dissociates in water (not all particles of the base dissociate)

weak base

300

A solution in which more solute could be dissolved 

unsaturated solution

400

when the indicator in a titration changes colour

end point

500

 when ions break apart when dissolved in solution

dissociation

Concentration

100

What is the molar concentration of 5.36 mol of copper (II) sulfate dissolved in 0.78 L of water?

6.9 mol/L

200

what number of moles is in 350 mL of a 0.95 mol/L solution?

0.33 mol

300

what two concentration units are often used for very small concentrations such as contaminants in water?

ppm and ppb

400

what is the volume of a 1.5 mol/L solution containing 0.495 mol of solute?

0.33 L

500

what mass of calcium chloride is needed to prepare 100.00 mL of a 1.23 mol/L solution?

13.7 g

Dilutions

100

What volume of 1.5 mol/L stock solution is needed to make 300.00 mL of a 0.45 mol/L solution?

90 mL

200

If 25.00 mL of a 2.5 mol/L stock solution is diluted to 150.00 mL, what is the new concentration?

0.42 mol/L

300

If you want to make a 1.20 mol/L solution from 30.00 mL of a 5.00 mol/L solution, what volume must you dilute to?

125 mL

400

If 750.0 mL of a 0.10 mol/L solution is made from 250.0 mL of a standard solution, what was the initial concentration?

0.30 mol/L

500

If you make a solution containing 4.57 g of sodium chloride in 100.00 mL of water then dilute it to make a solution with a concentration of 0.300 mol/L, what is the new volume?

261 mL

Solubility

100

What will increase the solubility of a solid in a liquid?

increasing temperature

200

does silver sulfate dissolve in water?

no

300

What strong intermolecular force attracts water molecules to one another?

hydrogen bonds

400

what would increase the solubility of a gas in a liquid?

Increasing pressure of that gas over the liquid

500

if 3 mol of MgCl₂ dissolves in water, how many moles of chloride ions are there in the solution?

6 mol

Acids and Bases

100

What do bases taste like?

bitter

200

what is the pH range of an acid?

< 7

300

what ions do Arrhenius bases produce in water?

hydroxide (OH^-)

400

what type of acid or base is represented in the following equation

 NH_3(aq) +H₂O_(l) ⇌ NH4⁺_(aq) + OH^-_(aq)?

weak base

500

what is it called when acids form ions in solution?

ionization