Asap! a cup of black coffee has a ph of 5. what is the hydrogen ion concentration of this cup of coffee? 3.0 × 10–5 m 1.0 × 10–5 m 4.0 × 10–6 m 4.0 × 10–4 m

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