1 Titrations Titration Calculations Print 1, 3-5, 7-8

2 ACID + BASE  SALT + WATERNeutralization Reactions (REVIEW) Neutralization – rxn of acid and base making a salt and water ACID + BASE  SALT + WATER = HCl + NaOH  NaCl + HOH H2O

3 Titration (video clip) The analytical technique used to calculate the moles in an unknown soln. mass % (g /gtotal) molarity (mol/L) molar mass (g/mol) buret titrant known vol. (V) known conc. (M) Safari Montage (2 min) Titration analyte known vol. (V) unknown conc. (M) (or moles)

4 equivalence point,(Veq):end point: indicator color change persists equivalence point,(Veq): equal stoichiometric amounts react completely HBr + NaOH  mol Acid = mol Base 2 HA + Ca(OH)2  H2SO KOH 

5 Titration Standard: solution of known conc. (M) Vanalyte (known)animation Standard: solution of known conc. (M) Vanalyte (known) Vtitrant (known) Animation (2 min): Mtitrant (known) Manalyte (unknown) 5

6 Pink in BASE Phenolphthalein Colorless in ACID

7 Quick Quiz! 1) When the moles of acid equals the moles bases you have reached the… A) titration point B) end point C) equivalence point D) neutralization point 7