University:
Mississippi College
Course:
CHE 141 | General Chemistry I
Academic year:

2022
Views:

221

Pages:

1
Author:

Abby D.

yTitration4 a lab technique used to determine the [] of a soin when it'snot known.the titrant?MA soin OF known [] is addedHCIslowlytoasoinofunknownuntiltheequivalencepointThe analyteis reached, evidenced by the indicator changing color.molecule whose color is phdependentThe data is used to calc. the [analyte] addedQuestion: A 30.00 mL soin of HBr is titrated w/0.200MCa(OH)2The equivalent point is reached when 75.74 mL base isadded.whatistheoftheacid?0.200Mways: Both start w/ Balancedcalord,(titrate)2chemical equation.baseHB30.0ML HBrA2 HBr + Ca(OH),2H2O + CaBr2acid1Use Dimensional Analysis (start w/ more of youknow)75, 74mLILx(0.200mal(al(H)2 MOLHBC=0.0302961000mlILImolca(OH)mol30,00 mL0.030LHBr0.030L= 1.01 M2Titration Equation:A=AcidMAVA MBVBB= Baseconficient Aceofficient2MA(30mL)(175.74mL)130mL2-30mL30mL 10.200M175.749 2 %30mL1.01M\