# Chemistry 151

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5) How many mL of 1M HCl is used to make the following dilutions?
a) 100mL of 0.1M HCl =
b) 250mL of 0.5M HCl=
c) 10ml of 0.01M HCl=

36.64 is the molar mass of hcl do I divide that into ml?

• Chemistry 151 -

Use the dilution formula for these.
c1v1 = c2v2
c = concn
v = volume

for a.
100 mL x 0.1M = ? mL x 1M
Solve for ?mL of the 1M.

b.
250 mL x 0.5M = ? mL x 1 M
Solve for ?mL of 1 M.

• Chemistry 151 -

a) 10ml

b) 125ml

• Chemistry 151 -

8

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