I need help with 1,2,3, and 4 I'm not sure if they're right?

Wow that a lot of text for my tiny so i no wanna answer

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m

Ansel nino;

The answer is the third option extremely gradual