east cengagerowcomilm take Assignment takeCovalentActivity do locator·assignment
ID: 559204 • Letter: E
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east cengagerowcomilm take Assignment takeCovalentActivity do locator·assignment take&tak; iP Connected Amnesia and future Untted document ocator assignment-take SIMULATION Concentration of Unknown via Titration II NaOH solution Add Base Base Added 5.05 ml. Experimental Settings Indicater: Phenolphthalem NaOH] 0500 M Set [NaOH] and add base m =cremests using the bunes above Unknoan acid solution 25.00 mL 14 0 Abeaker ontana a 25 mL solution ofan unknown mon proac acidreacts in a 11 st chaometre ratio with NaOH Titrate the solution with NOH to determine thecocentration orthe aed Perform a titration by seting the concentration of the NaOH solution and adding it to the acid solution wine the dufferent Add Base buttons The equnalence poist of the titration is passed when the solution color changes The unknown sample can be titrated multiple temes by pressing the Retitrate buttion and starting over Enter the concestration of the unknown acid solation wext) (1 of 1) Cengage LearningI cengage Techmcal SupportExplanation / Answer
HA = unkonown mono proticacid
HA(aq) + NaOH(aq) -----> NaA(aq) + H2O(l)
1 mol HA = 1 mol NaOH
no of mol of NaOH reacted = V*M
= 5.05*0.5
= 2.525 mmol
no of mol of HA reacted = 2.525 mmol
concentration of HA = n/V = 2.525/25 = 0.101 M
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