Solubility

Question 1

why water is a good solvent

Answer 1

it’s a highly polar molecule

Question 2

steps of dissolution

Answer 2

solute particles separate, solvent particles separate, & then solute and solvent particles come back together

Question 3

hydration

Answer 3

process where water molecules surround ions to dissolve them (ONLY IN IONIC SOLIDS!)

Question 4

solubility

Answer 4

extent to which a solute will dissolve into a solvent to form a solution

Question 5

ion-dipole interaction

Answer 5

intermolecular attraction where water molecules orient themselves so that their partially charged ends get close to respective ions

Question 6

heat of dissolution formula

Answer 6

ΔHdissolution = lattice energy + ΔHhydration

Question 7

miscible

Answer 7

2 substances can mix

Question 8

solubility

Answer 8

max amount of solute that dissolves in a fixed quantity of a given solvent @ given pressure/temp: “solution-ability” (usually in g/L H2O)

Question 9

explain “like dissolves like”

Answer 9

solutes with similar IMFs to the solvent will dissolve (eg polar into polar, nonpolar into nonpolar substances)

Question 10

2 ways for a substance to dissolve

Answer 10

solvation & dissociation

Question 11

solvation

Answer 11

solute particles are surrounded by solvent particles

Question 12

dissociation

Answer 12

attraction between solvent & solute is so strong that it splits the solute apart

Question 13

how ionic substances dissolve

Answer 13

dissociation

Question 14

how covalent substances dissolve

Answer 14

solvation

Question 15

solution

Answer 15

homogeneous mixture of a solute + solvent