On, is that KCl is an ionic solid, and you dissolve that solid in water.
NH3 is a gas(at normal temps), and one dissolves the gas in water. This gas is highly soluble, it turns out.
The last difference is the gas NH3 has a high vapor pressure when it is dissolved, that is, it escapes from the solution (just take a whiff of washing ammonia). KCl is not volatile in solution.
whats the difference between making an aqueous solution of potassium chloride, KCL, and one of ammonia, NH3
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