Question

Question #2bc06

Answer 1

They form water and a salt through a reaction called "Neutralization Reaction".

The classical good old example to this is the reaction of Hydrochloric Acid (`HCl`) and Sodium Hydroxide (`NaOH`).

`HCl` `+` `NaOH`

Will break up into

`H^+` `Cl^-` `+` `Na^+` `OH^-`

And reacting them together will result in this attraction

`H^+` `OH^-` `+` `Na^+` `Cl^-`

Which will bind together and form this

`H_2 O` `+` `NaCl`

So basically the reaction will be like this:

`HCl` `+` `NaOH` `->` `H_2 O` `+` `NaCl`

However, this is true for strong acids and strong bases reacting together. For other cases involving weak acids or bases reactions, check the links below.

Source & further reading:
Neutralization Reactions