Question

If the h+ concentration is 0.00001 m/l what is the oh- concentration

Answer 1

Answer:

Explanation:

We're

Answer 2

Given: Concentration of H⁺ ion, [H⁺] = 0.00001 mol/L

To Find: Concentration of OH⁻ ion, [OH⁻]

Solution:

To calculate [OH⁻] , the formula used:

• pH + pOH = 14            ⇒ 1
• pH = - log[H⁺]
• pOH = - log[OH⁻]        ⇒ 2

Applying the above formula for pH:

pH = -log [ 0.00001]

     = -log [ 1 / 100000]

     = - [ log1 - log100000]

As, log1 = 0

and, log100000 = 5

Therefore,

pH = -[ 0 - 5]

pH = 5

Putting the pH value in equation 1 :

5 + pOH = 14

pOH = 14-5

        = 9

pOH = 9

Putting the pOH value in equation 2:

9 = - log[OH⁻]

[OH⁻] = antilog (9)

         = 10⁻⁹

[OH⁻] = 10⁻⁹mol/L

Hence, the concentration of OH⁻ion is 10⁻⁹mol/L.