If the Ammonium Hydroxide (NH4OH) is boiled, Will only Ammonia from the soultion would start to evapotrate and Ammonia vapour would be generated at 40°C or the Ammonium Hydroxide vapour?
Carlos Araújo Queiroz
The (equilibrium) partial pressures of H2O and NH3 over ammonia (NH4OH) aq. solutions can be obtainined after Tables 2.21 and 2-23 in: R.H. Perry, D.W. Green, J.O. Maloney (Eds.), "Perry's Chemical Engineers’ Handbook", 7th ed., McGraw-Hill, 1997. Interpolation may be required; preferably as ln(|Pv|) or log10(|Pv|) vs. 1/T (K-1). Molar percentages for H2O above the ammonia solution are also available; after Table 2.22 (ibidem).
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