SOLUTION: A chemist is using
342
milliliters of a solution of acid and water. If
16.1
%
of the solution is acid, how many milliliters of acid are there? Round your ans
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Question 919523: A chemist is using
342
milliliters of a solution of acid and water. If
16.1
%
of the solution is acid, how many milliliters of acid are there? Round your answer to the nearest tenth
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
A chemist (like me), gets really annoyed by problems like this.
We need to assume that the acid in question is a liquid (not a solid or a gas),
and we need to assume that the 16.1% is specified as 16.1% (v/v) ,
where "v/v" means volume in volume,
meaning 16.2 milliliters of that acid are contained in 100 milliliters of the solution of acid and water.
With those assumptions, the ratio of acid volume to solution volume is
, where = number of milliliters of acid in the 342
milliliters of solution.
--->---> (rounded).
NOTE:
When I grab a bottle of hydrochloric acid, the label may state that the concentration (assay) is 36.0%, and that means that there are 26.0 grams of the gas hydrogen chloride (HCl) per 100 grams of the solution in the bottle.
When I dilute 1 milliliter (1 mL) of trifluoroacetic acid (TFA) to 1000 mL with water, I label that solution as 0.1% aq. TFA (v/v).
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