Asked by d

Iwish to prepare 3% NH3 from 20ml strong NH4OH and 180ml H2O.Can you help me?
Answered by DrBob222
What strength is the "strong" NH3. Concentrated NH3 as it comes out of the bottle is about = 14.8 mol/L soln and that 14.8 x 17 = about 252 g/1000 mL or 25.2/100 mL or about 25.2% (that's w/v %).
So if you take the entire 20 mL and make the total volume up to 180 mL you will have about 2.8%.
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