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Title: Molarity and stoichiometry worksheet
Description: Molarity and stoichiometry worksheet
Description: Molarity and stoichiometry worksheet
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CHE 140/170 Handout – Molarity
Molarity
Molarity is just a unit of concentration that indicates how much solute we have in a
solution
...
mols of solute
M=
1 L of solution
is
ar stu
ed d
vi y re
aC s
o
ou urc
rs e
eH w
er as
o
...
example
...
6
...
45 mols NaCl
1 L of NaCl sol' n
The first one is done as an
4
...
0234 M NaHCO3 =
2
...
2 M HCl =
5
...
58×10–8 M Na2SO4 =
3
...
42 M NaOH =
6
...
58×10–4 M KCH3CO2 =
Now, let’s try to do some calculations with Molarity!
Remember to always write out M as the
mol/L so you can see all the units
...
How many moles of NaCl are in 2
...
45 M NaCl?
Th
6
...
50 L NaCl = 16
...
How many moles of HCl are in 0
...
2 M HCl?
9
...
3 moles of 3
...
doc
This study source was downloaded by 100000828326221 from CourseHero
...
coursehero
...
How many liters of NaHCO3 are in 0
...
0234 M NaHCO3?
11
...
89 liters of 1
...
co
m
12
...
5 L of 1
...
However, it can only be used for dilutions
...
If we have 6
...
502 M NaCl solution?
16
...
00 M NaHCO3
do we need to make exactly 125 mL of a
0
...
45 M)V1 = (0
...
8 mL
17
...
00 mL of 1
...
00 mL, what is
our final Molarity?
sh
Th
14
...
2 M HCl, how many
milliliters of it do we need to make exactly
250 mL of a 5
...
If we take 15
...
42 M NaOH
and dilute it to 100
...
If we made one liter of 1
...
doc
This study source was downloaded by 100000828326221 from CourseHero
...
coursehero
...
First those steps are:
Step 1) Write a balanced chemical reaction
...
co
m
M reactant
moles product
19
...
45 M NaCl is mixed with excess Pb(NO3)2, how many grams of insoluble lead(II)
chloride can be formed?
2 NaCl(aq) + Pb(NO3)2(aq) → PbCl2(s) + 2 NaNO3(aq)
1
...
45 M
1
...
45 mol NaCl 1 mol PbCl 2 242
...
How many milliliters of 10
...
00 mL of
3
...
How many grams of NaHCO3 would be needed to neutralize a spill of one liter of 5
...
If 25
...
58×10–8 M Na2SO4 is mixed with excess Ba(NO3)2, how many grams of
precipitate can be formed? Note, you’ll have to figure out the identity of the precipitate first!
Molarity
...
com on 08-12-2021 07:21:33 GMT -05:00
https://www
...
com/file/55547935/11-Molarity-and-stoichiometry-worksheetpdf/
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Title: Molarity and stoichiometry worksheet
Description: Molarity and stoichiometry worksheet
Description: Molarity and stoichiometry worksheet