required practical 2 : titration

• titration is a neutralisation reation to find the concentration of an acid
• in a titration we react

  sodumhydroxide + sulfuric acid

  we know the volume and concentration of the sodium hydroxide, we use the titration to find out the volume of sulfuric acid required to neutralise the alkali and using that find the concentration of the acid
• when using a pipette let the liquid drain out for an accurate volume
• using a conical flask reduces the risk of splashing
• when reading the burette make sure its at eye level and you read the bottom of the miniscus
• cm^3 to dm^3 you divide by 1000
• concentration * volume = mole
• mass divided by mr = moles
• using Phenolphthalein observe a colour change of clear to pink
• stages for a titration:

  1. use a pipette to transfer 25cm^3 sodiumhydroxide into a conical flask
  2. add drops of indicator such as Phenolphthalein
  3. place the flask onto a white tile to observe the colour change
  4. use a burette with sulfuric acid and add it into the conical flask drip by drip until you observe colour change
  5. swirl the solution
  6. read the volume of acid
  7. take a mean