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Can someone tell me how to make 0.3% ammonia water from 28-30% Ammonia hydroxide? I am trying to make a gallon or 3.78 Liters.

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  • $\begingroup$ Welcome to chemistry.SE! If you had any questions about the policies of our community, visit the help center. $\endgroup$ – M.A.R. Feb 6 '15 at 15:27
  • $\begingroup$ Is it a question for homework/study or you need it for an experiment? I am asking because ammonia is volatile: if you need this solution with accurate concentration/pH, you also should be able to measure somehow what you get at hand. $\endgroup$ – Greg Mar 10 '15 at 1:38
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Hint : Ammonia water is actually diluted Ammonium Hydroxide ruled by the following equilibrium :

$$\ce{NH3 + H2O <=> NH4+ + HO-}$$

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