Question

Calcular el pH de una disolución de 5 gramos de H2SO4 en 17L de solución.

Answer 1

Mm H2SO4 = 98 g/mol

mol = masa/Mm

mol = 5 g / 98 g/mol

mol = 0.051

M = mol/V(L)

M = 0.051 mol
       `````````````````` 
                17 L

M = 3 X 10⁻³ mol/L

pH = -log [H⁺]

pH = -log ( 3 x 10⁻³)

pH = - (2.52)

pH = 2.52