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Acids, alkalis and titrations

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Question 39

A student carries out a titration to determine the volume of hydrochloric acid needed to neutralise a solution of barium hydroxide.

She starts with 20.0 cm320.0\text{ cm}^320.0 cm3 of barium hydroxide solution of concentration 0.150 mol/dm30.150\text{ mol/dm}^30.150 mol/dm3.

She adds 0.250 mol/dm30.250\text{ mol/dm}^30.250 mol/dm3 hydrochloric acid until the barium hydroxide is completely neutralised.

The equation for this reaction is:

Ba(OH)2+2HCl→BaCl2+2H2O \text{Ba(OH)}_2 + 2\text{HCl} \rightarrow \text{BaCl}_2 + 2\text{H}_2\text{O} Ba(OH)2​+2HCl→BaCl2​+2H2​O
a.

Calculate the amount, in moles, of barium hydroxide used.

[2]
b.

Calculate the amount, in moles, of hydrochloric acid needed to neutralise this amount of barium hydroxide.

[2]
c.

Calculate the volume, in cm3\text{cm}^3cm3, of hydrochloric acid needed to neutralise this status of barium hydroxide.

[2]

Acids, alkalis and titrations Questions

  1. IGCSE
  2. /Chemistry
  3. /Acids, alkalis and titrations