How to prepare 50 ppm ammonia solution form 25% ammonia
solution?
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Answer Posted / vani
First convert ppm to %.i.e.50ppm/10,000=0.005%
Then apply c1v1=c2v2;
c1=25%;v1=volume to be taken from 25% solution;
c2=0.005%; v2=100ml
v1=c2v2/c1
=0.005x100/25
=0.02ml
=20µL
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