Lab 7 - Osmosis

Question 1

molarity

Answer 1

moles of a single compound/ liter of solution

Question 2

osmolarity

Answer 2

moles of all solute molecules combined/ liter of solution

total moles solute/ L solution

accounts for the presence of different compounds

accounts for the fact that some compounds dissociate

Question 3

semi-permeable barrier

Answer 3

allows solvent but not solute to diffuse through

Question 4

osmosis

Answer 4

the diffusion of a solvent though a semi-permeable barrier from an area of low solute concentration (hypoosmotic) to an area of high solute concentration (hyperosmotic)

Question 5

hyperosmotic

Answer 5

higher solute concentrations

lower water concentration

Question 6

hypoosmotic

Answer 6

lower solute concentration

higher water concentration

Question 7

hypotonic solution

Answer 7

causes a cell to swell

Question 8

hypertonic solution

Answer 8

causes a cell to shrink

Question 9

isotonic solution

Answer 9

does not change a cell’s volume

Question 10

isosmotic

Answer 10

two solutions with the same solute concentrations

Question 11

dilution formula

Answer 11

stock solution/final concentration = __ fold dilution