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Simfish
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What about Bronsted acids?
And what about Lewis bases that don't have pH's over 7? (same for Bronsted bases)
And what about Lewis bases that don't have pH's over 7? (same for Bronsted bases)
Lewis acids are chemical species that can accept a pair of electrons to form a covalent bond.
Lewis acids do not necessarily have to produce hydrogen ions (H+) or decrease the pH of a solution to act as an acid, unlike Arrhenius and Bronsted-Lowry acids. Instead, they can form a bond with a base by accepting an electron pair.
Yes, some Lewis acids can have a pH below 7 if they are in a solution with a substance that can donate electrons to form a covalent bond.
Yes, some Lewis acids may have a pH above 7 if they are in a solution with a substance that can donate protons to form a covalent bond.
One example is aluminum chloride (AlCl3), which is considered a Lewis acid because it can accept an electron pair. However, when dissolved in water, it forms hydrochloric acid (HCl), which decreases the pH of the solution. So, in this case, the pure Lewis acid itself does not have a pH below 7, but its reaction with water does.