A solution of the weak acid HA is prepared by dissolving 2.70 g of HA in 100.0 mL water. The solution is titrated, and the equivalence point is reached after 33.8 mL of 0.500 M NaOH is dispensed. Calculate the molar mass of HA. At the equivalence point in this titration, how can the solution pH be described? Acidic, Neutral, or Basic?

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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