Question

Question #97f87

Answer 1

Yes

Explanation:

Yes, pure water does contain ions due to a process called the autoionization (or self-ionization) of water.

![http://www.middleschoolchemistry.com/lessonplans/chapter6/lesson8]()

That happens because water can act both as an acid, donating a proton, `H^(+)`, to another water molecule, which acts as a base.

The reaction results in the formation of the hydronium ion, or `H_3O^(+)`, and of the hydroxide ion, `HO^(-)`.

![)

However, the concentration of hydronium and hydroxide ions will be very, very small; in fact, the equilibrium that's established in solution lies so far to the left, that only 18 in `10^10` molecules of water will undergo autoionization.