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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Smoren Smoren
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11 years ago
How many mL of concentrated hydrochloric acid would be necessary to prepare 50mL of a 10% HCl solution?
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wrote...
#1
11 years ago
Assuming you're being asked to prepare a volume/volume solution, you'll need 5ml of the concentrated HCl.
wrote...
#2
11 years ago
The molarity of the concentrated solution is 1M

M1=1M
M2=10%=0.1M
V1=?
V2=50mL

Using M1 x V1=M2 x V2

V1=M2 x V2/M1

    =0.1 x 50/1
 
    =5mL

Hope this helps you!! Slight Smile
wrote...
#3
11 years ago
From my reference list I find that the highest concentration HCl available = 36%HCl by mass
You want 50mL of 10% by mass
C1V1 = C2V2
36*V1 = 10*50
V1 = 500/36
V1 = 13.9mL of the 36% concentrated HCl will give 10% solution when diluted to volume 50mL
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