The having ion concentration a certain substance is 398 time

The having ion concentration a certain substance is 3.98 times 10^-6 mole/l find the of substance the ph. of a certain solution is 5.4 falcate the concentration.

Solution

Solution:

1) Lemon soda is NaHCO₃

The formula is

pH = -log₁₀ [H+]

Lemon soda has a pH of 9. It is a base, since the pH is above 7.

You first plug 9 into the formula

9 = -log₁₀ [H+]

Then divide by -1

-9 = log₁₀ [H+]

Take 10 on each side:

10^-9 = 10log₁₀ [H+]

Simplify:

10^-9 = [H+]

[H+] = 10^-9 mol/L

[H+} = 0.000000001 mol/L

2)

p^H = 5.4

[H+] = 10^-pH

For vinegar

[H+] = 10^-5.4

[H+] = 10^-5.4