Question

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

Answer 1

Answer:

The hydroxide ions decrease.

Explanation:

I got it right on the quiz. This is what I saw. Read this, "Adding water to an acid or base will change its pH. Water is mostly water molecules so adding water to an acid or base reduces the concentration of ions in the solution. When an acidic solution is diluted with water the concentration of H + ions decreases and the pH of the solution increases towards 7."

Hope this helps! Tell me if this is wrong just incase.

Answer 2

Answer:

decrease or stay the same idk but i'm pretty sure its decrease

Explanation:

When an acid dissolves in a solution like water the hydrogen ions increase

When a base dissolves in a solution the hydroxide ions increase

it is not the first one from the evidence shown above

it is not the last one because hydroxide could not just disappear well maybe if you waited for 1,000 years or if you added so much acid there was no water left but they simply say added to water

the reason i think its decrease instead of stay the same is because as the hydrogen ions increase shouldn't the hydroxide ions decrease since an acid is acidic and that can dissolve metals.

have a nice day!