Neutralisation

• blu


  Litmus paper
• When you mix an alkali and an acid you get a neutral substance
• Neutral


  • Has the same amount of hydrogen and hydroxide ions
  • Appears green in a universal indicator
• Neutralisation practical


  1. Measure out 15cm³ of 0.4M hydrochloric acid

  2. Put the acid into a small conical flask and add a few drops of Ul solution

  3. Using a pipette, slowly add 0.4M sodium hydroxide to get the green colour of pH7
• Neutralisation Questions


  • Acids are ed in universal indicator
  • Alkalis are blue in universal indicator
  • When we add alkali to neutralise an acid we see a yellow colour change from: red blue
  • The pH of a bee sting is about 3.5. Bicarbonate of soda
• A base is a substance that accepts a proton (H+) in a chemical reaction.
• Neutralisation is the reaction between an acid and a base to form salt and water.
• An acid is a substance that donates a proton (H+) in a chemical reaction.
• Neutralization is a chemical reaction between an acid and a base, resulting in the formation of water and a salt.
• Acids are proton donors, while bases are proton acceptors.
• The pH scale measures the hydrogen ion concentration ([H+]) in a solution on a logarithmic scale from 0-14.