Question

What will be the concentration in terms
volume if 20ml
if 20ml of Alchol is added
Yo 20ml of water​

Answer 1

Answer:That depends on what the original alcohol solution is.  Assuming it is 100% alcohol (and this is not really possible because alcohol absorbs water very rapidly), then ...

(20 ml)(100%) = (x ml)(20%)

x = 100 mls

Thus, you would have to add 80 ml of water to the 20 ml of 100% alcohol.  This also assumes that the volumes are additive, which they usually aren't.  

 

If the original alcohol is, say, 95% (much more likely in real life), then ...

(20 ml)(95%) = (x ml)(20%)

x = 95 ml

Thus, you would have to add 75 ml of water (95 ml - 20 ml).

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