Question

Explain why pH of 0.1 m solution of HCL is same as that of 0.05 m H2 s o4

Answer 1

Sulphuric acid has 2 acidic hydrogen while HCl has only one

Answer 2

Given:

H₂SO₄ + 2H₂O ---->2H₃O⁺+ SO₄²⁻

0.05                            2X0.05

pH=-log[0.05Mx 2]

pH=-log[0.1M]

pH=1

∴pH of 0.05M of H2SO4 is 1