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Or an acid? Or just polar in general?
Or an acid? Or just polar in general?
It only means that it's soluble at alkaline pH. Any other information you can garner from this requires that you know the solvent. If it's a polar solvent, this suggests that your molecule is charged at alkaline pH, which implies it is an acid. If it's in a non-polar solvent, this suggests that the molecule is almost certainly not charged at alkaline pH, and is more than likely basic.
It only means that it's soluble at alkaline pH. Any other information you can garner from this requires that you know the solvent. If it's a polar solvent, this suggests that your molecule is charged at alkaline pH, which implies it is an acid. If it's in a non-polar solvent, this suggests that the molecule is almost certainly not charged at alkaline pH, and is more than likely basic.
If it's in a polar solvent at alkaline pH, it does suggest that it's charged, but it could either be positively or negatively charged couldn't it? Couldn't the solute be a base if it's positively charged like NH4+?
If it's in a polar solvent at alkaline pH, it does suggest that it's charged, but it could either be positively or negatively charged couldn't it? Couldn't the solute be a base if it's negatively charged like NH2-?
Nice bait and switch there. Any idea what the pKa of NH3 is?
The pKa of NH3 is around 40 if I remember right.