When a particular chemical compound can act as either an acid or a base we say that compound is
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When a particular chemical compound can act as either an acid or a base, we say that compound is amphoteric.
To determine if a chemical compound is amphoteric, you can consider its chemical structure and properties. Generally, compounds that have the ability to donate or accept protons (H+ ions) can act as both acids and bases.
One way to identify an amphoteric compound is by looking at its reaction with water. If the compound can donate a proton to water, forming a hydronium ion (H3O+), it can act as an acid. On the other hand, if the compound can accept a proton from water, forming hydroxide ions (OH-), it can act as a base.
For example, water itself is an amphoteric compound. It can donate a proton to form a hydronium ion (H3O+), behaving as an acid. It can also accept a proton to form a hydroxide ion (OH-), acting as a base.
Other examples of amphoteric compounds include certain metal oxides like aluminum oxide (Al2O3) and zinc oxide (ZnO), as well as amino acids like glycine. These compounds can exhibit both acidic and basic properties depending on the reaction conditions.
So, to determine if a compound is amphoteric, you need to examine its ability to donate or accept protons, usually by observing its reaction with water or other suitable substances.