1st Exam equations (2)

Question 1

Molarity M

Answer 1

moles of solute / liter of solution (mol/L)

Question 2

Molality, m

Answer 2

moles of solute / kilogram of solvent (mol / kg)

Question 3

Normality (N)

Answer 3

Amt. of substance in g OR EW of solute / L solvent

n x M

Question 4

EW

Answer 4

MM / n

Question 5

How to get reaction unit (n)

Answer 5

Precipitation: just use charge

Acid base reaction: Number of H+ Ions

Question 6

Mol

Answer 6

g / MM

Question 7

Ppm

Answer 7

g solute/g sol’n x10^6

Question 8

Ppm to molarity

Answer 8

Ppm given x 1 mol/MM x density given x 1000 mL/1 soln

Question 9

Molarity to ppm

Answer 9

Molarity given/1L x MM/1mol x 1L soln/1000 mL × 1 mL / 1.03 g soln x 10^6

Question 10

Normality w/ grams and mol

Answer 10

Given Grams/1 × mol/MM × 1/ Liters given

M × n

Question 11

Normality with grams and liquid

Answer 11

Given g/given L x mol/MM