Question

As it is said that NH3 is highly soluble in water but how is it possible as NH3 has high boiling point and low acidic strength.

Answer 1

Answer on Question #53448 – Chemistry – Inorganic Chemistry

Question:

As it is said that $\mathrm{NH}_3$ is highly soluble in water but how is it possible as $\mathrm{NH}_3$ has high boiling point and low acidic strength.

Answer:

The solubility of ammonia in water is associated with the reaction occurring with water.

$$\mathrm{NH}_3 + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{NH}_4\mathrm{OH}$$

Ammonium hydroxide is a polar molecule so that it has high solubility in polar solvents especially in water. Boiling point and acidic strength don't impact on solubility, because it is determined by the interaction between substance and solvent.

Note: Ammonia has high boiling point in comparison with gases, but it is still very low being of $-33\ \mathrm{C}^{\circ}$. And for this case "low acidic" strength is not correct to use, because, for instance, NaOH also has very low acidic strength being strong base.

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