separating mixtures

Question 1

solute

Answer 1

dissolved in the solvent

Question 2

solvent

Answer 2

what dissolves the solute

Question 3

in a solution of salt and water, what is the solute?

Answer 3

salt

Question 4

in a solution of salt and water, what is the solvent?

Answer 4

water

Question 5

immiscible meaning

Answer 5

two liquids that do NOT mix in a homogenous solution

Question 6

solubility meaning

Answer 6

how much something dissolves

Question 7

what is the mobile phase in paper chromatography?

Answer 7

the solvent eg water or ethanol

Question 8

what is the stationary phase in paper chromatography?

Answer 8

the paper

Question 9

why is the baseline drawn in graphite (pencil)?

Answer 9

bc it’s insoluble so will not move

Question 10

how do you work out the rf value?

Answer 10

distance the pigment has moved
___________________________________
distance the solvent has moved

Question 11

what does the rf value show?

Answer 11

the solubility of substances on certain papers in certain solvents

Question 12

what is the solvent front?

Answer 12

highest point reached by solvent

Question 13

how do you separate insoluble solid and liquid mixture?

Answer 13

filtration

Question 14

how do you separate solutions of solid in liquid? (obtain liquid)

Answer 14

distillation

Question 15

how do you separate solutions of solid in liquid? (Obtain solid)

Answer 15

evaporation

Question 16

how do you separate two miscible liquids?

Answer 16

fractional distillation

Question 17

how do you separate solutions containing mixture of small amounts of solids?

Answer 17

chromatography

Question 18

how do you separate two immiscible liquids?

Answer 18

separating funnel (run off the more dense liquid by opening tap)

Question 19

how do u remove both insoluble and solvable impurities and purify a solid?

Answer 19

re-crystallisation