Calculate d pH of 0.005mol/dm³ tetraoxosulphate(vi)

1 answer

To calculate the pH of a tetraoxosulphate(VI) solution, you first need to determine the concentration of the hydrogen ion.

The chemical formula for tetraoxosulphate(VI) is H2SO4. When tetraoxosulphate(VI) dissociates in water, it produces two hydrogen ions (H+) and one sulfate ion (SO42-).

H2SO4 → 2H+ + SO42-

The concentration of hydrogen ions in a 0.005 mol/dm³ tetraoxosulphate(VI) solution is therefore:

[H+] = 2 x 0.005 mol/dm³
[H+] = 0.01 mol/dm³

To calculate the pH of the solution, you can use the following formula:

pH = -log[H+]

pH = -log(0.01)
pH = 2

Therefore, the pH of a 0.005 mol/dm³ tetraoxosulphate(VI) solution is 2.