What is the arrhenius definition of an acid? a substance that increases h3o+ concentration when it is dissolved in water. a substance that increases oh– concentration when it is dissolved in water. a compound that donates protons. a compound that accepts protons.

Option (C) is the correct answer.

Explanation:

According to Arrhenius, a substance which upon dissolution gives hydrogen ion or ion in an aqueous solution is known as Arrhenius acid.

On the other hand,  a substance which upon dissolution gives hydroxide ion or ion in an aqueous solution is known as Arrhenius base.

For example,

Hence, HCl is an Arrhenius acid.  

Thus, we can conclude that the Arrhenius definition of an acid is that a substance that increases H3O+ concentration when it is dissolved in water.

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