Question

When NaOH is added to water, the hydroxide concentration increases . What can you conclude about NaOH

Answer 1

1. NaOH dissociates in water.
2. NaOH is a base.

That's what I get from that. NaOH must dissociate in water to raise the concentration of anything, and it must be basic, otherwise it would raise the hydronium concentration or nothing at all.

Answer 2

When sodium hydroxide (NaOH) is added to water (H2O), heat will be released.

Step-by-step explanation:

NaOH+H2O= Na+ and OH- ions.

Sodium hydroxide is a base and can disassociate in water.

The heat released is due to the OH- ions stability. Is the result of the chemical species being brought to a lower energy state. Also as it is a very strong phenomenon, it can be used as a moisture absorber.

I hope it helps!