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Neutralization (DP IB Chemistry: SL)

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Neutralization

  • A neutralisation reaction is one in which an acid (pH <7) and a base/alkali (pH >7) react together to form water (pH = 7) and a salt

Equilibria Neutralisation Reaction, downloadable AS & A Level Chemistry revision notes

  • The proton of the acid reacts with the hydroxide of the base to form water

Equilibria Neutralisation Reaction Ions, downloadable AS & A Level Chemistry revision notes

  • The spectator ions which are not involved in the formation of water, form the salt

Equilibria Neutralisation Reaction of HCl and NaOH, downloadable AS & A Level Chemistry revision notes

The diagram shows a neutralisation reaction of HCl and NaOH and the two individual reactions that take place to form the water and salt

  • The name of the salt produced can be predicted from the acid that has reacted

Acid Reacted & Salt Table

Equilibria Table 1_Neutralisation Reactions, downloadable AS & A Level Chemistry revision notes

Examiner Tip

The enthalpy of neutralisation is the enthalpy change that occurs when an acid reacts with a base to form one mole of water. Since the reaction between strong acids and strong bases is the same regardless of the acid or base, it should be no surprise the enthalpy change is the same and is approximately -57 kJ mol-1

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Stewart

Author: Stewart

Expertise: Chemistry Lead

Stewart has been an enthusiastic GCSE, IGCSE, A Level and IB teacher for more than 30 years in the UK as well as overseas, and has also been an examiner for IB and A Level. As a long-standing Head of Science, Stewart brings a wealth of experience to creating Exam Questions and revision materials for Save My Exams. Stewart specialises in Chemistry, but has also taught Physics and Environmental Systems and Societies.