Question

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.

Answer 1

a

A substance that increases H3O+ concentration when it is dissolved in water.

Step-by-step explanation:

Answer 2

A substance that increases H3O+ concentration when it is dissolved in water.

Step-by-step explanation:

Note that H3O+ and H+ are used quite interchangeably in chemistry.

An acid makes the H+ content higher, thereby decreasing the pH.