Test 4: Solutions Lecture 2

Question 1

Miscible solution

Answer 1

mixtures in any proportion that will dissolve to make a solution

Question 2

Saturated solution

Answer 2

only a maximum amount of solute will dissolve in solution before the rest will start to precipitate out

Question 3

In this chapter, we will study what units of concentration? (4)

Answer 3

molarity concentration per L, percent concentration, pp & ppb, dilutions.

Question 4

(M) stands for

Answer 4

Moles of Solute / Liters of Solution not to be confused with shorthand mol for moles

Question 5

(M) is used when working with

Answer 5

moles in a concentration

Question 6

Percent concentration is often used when solutions are relatively

Answer 6

concentrated

Question 7

Mathematical expression of percent concentration

Answer 7

(w/w), (w/v), or (v/v) multiplied by 100 to give us a percentage. In these cases, w is weight and v is volume.

Question 8

where both weight and volume are used, comparable units are __ because water has a density of __.

Answer 8

grams and mL; 1 g/mL

Question 9

ppm and ppb

Answer 9

“parts per million” and “parts per billion”,

Question 10

ppm and ppb both refer to a ‘part’ as a unit of

Answer 10

mass (g) or volume (mL)

Question 11

Mathematical expression of ppm

Answer 11

amount of solute (g)/
amount of solution (g) * 1*10^6 = ppm concentration of solution

Question 12

Mathematical expression of ppb

Answer 12

amount of solute (g)/
amount of solution (g) * 1*10^9 = ppb concentration of solution

Question 13

If we multiply the concentration by the volume of the
solution, the volume dimensions cancel out and we are left with the amount of solute. This is expressed as

Answer 13

C1V1 = C2V2 (C: concentration of solutions , V: volume of solutions