sulphuric acid is dibasic

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Demonstrating that sulphuric is dibasic:

Aim: The aim of my plan is to demonstrate that sulphuric acid is dibasic.


 Acid is a substance that reacts with a base to form a salt and water similarly a base is a substance that reacts with an acid to form a salt and water. “Lewis (a scientist) states that an acid is a compound that accepts a pair of electrons from a base and a base is a molecule or an ion that donates a pair of electrons to an acid. Acids taste sour and are corrosive and bases are slippery”. О

Acid + Base → Salt + Water

Acid + Metal → Metal Salt + Hydrogen gas


I predict that sulphuric acid, H2SO4 is dibasic because it forms two hydrogen (H+) ions in an aqueous solution. It is the molecule of sulphuric acid which changes to sulphate ions (SO42-) and hydrogen ions (H+) when dissolved in water. However, hydrochloric acid is monobasic as it only forms one hydrogen (H+) ion in an aqueous solution. To prove this, I am going to carry out two different experiments that involve a titration and collection of a gas. I assume that it should require me half a volume of sulphuric acid to neutralise sodium hydroxide, NaOH than HCl in titration. In the collection of gas, I expect to collect double the volume of gas when metal reacts with H2SO4 than that of produced in the reaction with HCl.

Apparatus: Titration

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Method: Titration:

  1. Pour in 100cm3of sulphuric acid and 100cm3of Sodium hydroxide in two separate beakers and label them with their corresponding names, H2SO4 and NaOH.
  2. Rinse burette first with distilled water then with small amount of H2SO4 while tap is still closed. Leave some of the acid and run it through the tap.
  3. Close the tap and clamp the burette. Make sure it is secure.
  4. Using filter funnel, fill burette with H2SO4.
  5. Also, rinse conical flask with distilled water first and then with NaOH.
  6. Bind pipette filler with pipette and fill ...

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