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# Because it will dissolve so many solvent, what substance is sometimes called the universal solvent?

$\text{..........water...........}$
Believe it or not most materials, molecular or ionic, express some water solubility. Because of its dipolar nature, i.e. ""^(delta+)H-stackrel(-delta)O-H^(delta+), water is a superb solvent for many ionic species; and also for polar molecules such as alcohols and hydrogen halides. The fact that water is LIGHT and very concentrated (i.e. $> 55.5 \cdot m o l \cdot {L}^{-} 1$) only lends to its utility. What else? Water is cheap ( a big consideration).