Question

Complete the sentence. When an acid is added to water, hydronium ions __________.

A. increase

B. decrease

C. stay the same

D. disappear

Answer 1

B. decrease

Step-by-step explanation:

Base dissociate to give out OH- ions

In the other hand ,when water (H2O) dissociate it give out hydronium ions ( H3O+) and OH- ions

when base is added to water more OH- it led to addition of more Oh- ions hence H3O+ decrease.

Answer 2

when an acid is added to water, hydronium ions stay the same