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Sodium hydroxide (NaOH) is a classic example of a strong base because it produces hydroxide (OH-) ions and dissociates completely in water. Ammonia is an example of a weak base because it is a proton acceptor.

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13y ago
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9y ago

There are two accepted definitions of bases.

The more usual is the Bronsted-Lowry definition: a base is a species which can accept a proton (hydrogen ion).

The Lewis theory is of wider application (though it would only be used in more advanced work) and defines a base as an electron pair acceptor.

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15y ago

a solution whose pH level is greater than 7 (pure water is very close to 7, and is considered to be neutral). A link to a very good explanation is below.

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14y ago

A base is any solution with a pH greater than 7 (pure water). Bases are slippery, bitter, and include things such as soaps, eggs, and blood.

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14y ago

Water is neutral.

But technically it is an amphoteric substance, meaning it can act as both an acid and a base. However, it is very weak in both respects.

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12y ago

acid

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Q: Which definition describes a base?
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