Concentration

Question 1

Describe solute/solvent.

Answer 1

solute=stuff

solvent=liquid

Question 2

Concentration equation (g/L)

Answer 2

c=m
—–
v

c= concentration
m= mass (g)
v= volume (L) (solution)

Question 3

Concentration eqution (%)

Answer 3

c= g
——
100mL

Question 4

Concentration/volume equation.

Answer 4

c1v1=c2v2

Question 5

Proportion of c=m/v

Answer 5

c m
— = —
1 v

Question 6

1L of 10% ethanol sultion contains how much ethanol?

Answer 6

10g/100mL

Question 7

Convert 10% concentration to g/L

Answer 7

100g/L

Question 8

What are the types of concentration in aqueous solutions?

Answer 8

Parts per Million (ppm)

Molarity (M)

Question 9

What is an aqueous solution?

Answer 9

A solution where the solvent is water

Question 10

I mL of water is what in grams?

Answer 10

1g

Question 11

What is ppm used for?

Answer 11

Very week concentrations like minerals, floride ions in your water bottle etc.

Question 12

Describe ppm

Answer 12

The number of parts of solute in a 1,000,000 parts of solution

Question 13

ppm is equal to what?

Answer 13

1 000 000mL

Question 14

How many grams of kool-aid would you need to add to 125mL of water to make a 5000ppm solution?

Answer 14

0.625g

Question 15

You have a 0.002% Ca solution.

1. how many ppm?
2. How many g/L

Answer 15

1. 20g ppm

2. 0.02g/L

Question 16

You have 0.025L of sugar solution

1. how many g to make 100mL
2. How many ppm

Answer 16

1. 6.25g

2. 25 000g ppm