Question

pH
is defined as
o Log [H₂O
in Log [HQ]
(+ Log Et com]
- Log [ht] [ok]
TV​

Answer 1

Explanation:

The precise definition of pH is "the negative common logarithm of the activity of hydrogen ion in solution". ... pH = - log 10 ([H+]) . The lower ...

Answer 2

Answer:

Because of its amphoteric nature (i.e., acts as both an acid or a base), water does not always remain as  H2O  molecules. In fact, two water molecules react to form hydronium and hydroxide ions:

2H2O(l)⇌H3O+(aq)+OH−(aq)(1)

This is also called the self-ionization of water. The concentration of  H3O+  and  OH−  are equal in pure water because of the 1:1 stoichiometric ratio of Equation  1 . The molarity of H3O+ and OH- in water are also both  1.0×10−7M  at 25° C. Therefore, a constant of water ( Kw ) is created to show the equilibrium condition for the self-ionization of water. The product of the molarity of hydronium and hydroxide ion is always  1.0×10−14  (at room temperature).

Kw=[H3O+][OH−]=1.0×10−14(2)

Equation  2  also applies to all aqueous solutions. However,  Kw  does change at different temperatures, which affects the pH range discussed below.

H+  and  H3O+  is often used interchangea

Explanation: