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Katyanochek1 [597]
3 years ago
8

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the remaining solution contains 16%

peroxide?
Chemistry
2 answers:
Nastasia [14]3 years ago
4 0
The question above may be solved using the overall mass and component balances. If we let x be the  number of liters of peroxide that should be added, the final mixture will have a quantity of x+12 L. The peroxide balance before and after mixing is,
                            x(1) + 12(0.08) = (x + 12)(0.16)
The value of x is 1.143. Thus, approximately 1.143 L of peroxide should be added to the original solution. 
-Dominant- [34]3 years ago
3 0
Lets say you add x liters of peroxide
then the total number of liters will be <span>12+x
</span>presently you have 8% of 12 or .96 liters of peroxide
when you add x liters you will have <span>.96+x</span> liters of peroxide total
you want that to be 16% of (12+x) so set

<span><span>.96+x=.16(12+x)
solve for x
multiply both sides by 100

96 + 100x = 16(12+x)
96 + 100x = 192 + 16x
84x = 96
x = 1.19

So 1.19 liters</span></span>
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