Titrations L.O.:  Perform acid–base titrations, and carry out structured titrations.

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Titrations L.O.:  Perform acid–base titrations, and carry out structured titrations.

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Hydrochloric acid of concentration 0.1 mol dm –3 was added from a burette into a flask containing cm 3 of aqueous sodium hydroxide until neutralisation took place cm 3 of the acid were required. Calculate the concentration of the sodium hydroxide solution in mol dm –3.

Worksheet 2.10

What is the concentration of an NaOH solution if 25.0 cm 3 is neutralized by 23.4 cm mol dm -3 HCl solution? 3. Calculate no. moles of NaOH: moles HCl = moles NaOH 4. Calculate conc. of NaOH: = ( × 1000) / 25.0 conc. = (moles × 1000) / volume = mol dm Calculate no. moles HCl: moles = (conc. × volume) / 1000 = = (0.998 × 23.4) / Determine ratio of NaOH to HCl: NaOH + HCl  NaCl + H 2 O ratio NaOH:NaCl = 1:1

Titration calculations