Reactions of acids

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Question 23
Medium

This question is about acids, alkalis, and titrations.

a.

Which ion is produced by acids in aqueous solutions?

  • OH−\text{OH}^-OH−
  • H+\text{H}^+H+
  • Cl−\text{Cl}^-Cl−
  • O2−\text{O}^{2-}O2−
[1]
b.

What is the general name given to the reaction between an acid and a soluble metal hydroxide (alkali)?

  • Displacement
  • Neutralisation
  • Thermal decomposition
  • Oxidation
[1]
c.

Balance the chemical equation for the reaction between sodium hydroxide (NaOH\text{NaOH}NaOH) and sulfuric acid (H2SO4\text{H}_2\text{SO}_4H2​SO4​): ‾NaOH+H2SO4→Na2SO4+‾H2O\underline{\quad}\text{NaOH} + \text{H}_2\text{SO}_4 \rightarrow \text{Na}_2\text{SO}_4 + \underline{\quad}\text{H}_2\text{O}​NaOH+H2​SO4​→Na2​SO4​+​H2​O

[2]
d.

Sodium hydroxide is a strong alkali. Which of the following is the most likely pH value for a concentrated solution of sodium hydroxide?

  • 111
  • 444
  • 777
  • 131313
[1]
e.

Which piece of laboratory apparatus should be used to transfer exactly 25.0 cm325.0\text{ cm}^325.0 cm3 of the sodium hydroxide solution into the conical flask?

  • Volumetric pipette
  • Measuring cylinder
  • Glass beaker
  • Buchner funnel
[1]
f.

Describe the practical procedure a student should follow to perform a titration to determine the exact volume of sulfuric acid needed to neutralise the sodium hydroxide solution, using a burette, a conical flask, and a suitable indicator.

[5]

Reactions of acids Questions

  1. GCSE
  2. /Chemistry
  3. /Reactions of acids