Answer to Question #123655 in General Chemistry for ethan

Question

The pH value of a sulphuric acid is 2. What is the molarity of this sulphuric acid? (Show me steps please)

Answer 1

H₂SO₄ <=> 2H⁺ + SO₄^2- ;

pH=-lg[H⁺] ;

[H⁺]=10^^(-pH)=10^-2=0.01;

[H₂SO₄]=[H⁺]/2=0.01/2=0.005 mol/L;

Answer: the molarity of sulphuric acid is 0.005 M;