Answer / kalithas

100mg of acetone in 100mL of solvent. further dilute to
2.5mL in 100mL solvent it will be 25 ppm of acetone

Answer / suresh

25mg of acectone->100ml of solvent
further 1ml from 100ml in 10 ml of solvent=25ppm

Answer / rajnish

50mg of acetone in 100ml solvent. further dilute to 5ml in
100ml of solvent it will be 25ppm of acetone

Answer / kanta

first we prepare 1000 ppm(mgml).
1000 ppm acetone standard solution preparation:-10 mg of acetone solvent is taken in 10 ml vf and make up with suitable diluent.
25 ppm preparation:- 0.25 ml of 1000 ppm solution is taken in a 10 ml vf and make up with a that suitable diluent.
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