What volume in milliliters of a 0.141 M NaOH solution is required to reach the endpoint in the complete titration of a 15.0 mL sample of 0.128 M H2SO4?
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2 NaOH + H2SO4 → Na2SO4 + 2 H2O
(15.0 mL H2SO4) x (0.128 M) x (2/1) / (0.141 M) = 27.2 mL NaOH
(15.0 mL H2SO4) x (0.128 M) x (2/1) / (0.141 M) = 27.2 mL NaOH