BRAINCAKENeutralisation Reactions
Neutralisation reactions occur when an acid reacts with a base to form a salt and water.
For example, hydrochloric acid reacts with sodium hydroxide to give sodium chloride and water. The equation for the reaction is:
HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)
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Key terms in this lesson
- Mole
- The amount of substance that contains as many particles as there are atoms in exactly 12g of carbon-12.
- Enthalpy
- A measure of the heat energy stored in a chemical system.
- Enthalpy change
- The heat energy transferred between the system and its surroundings during a process carried out at constant pressure.
- Exothermic
- Describes a reaction in which energy is transferred from the system to the surroundings, so the enthalpy change is negative.
- Standard conditions
- A pressure of 100 kPa, a temperature of 298 K, and, for solutions, a concentration of 1 moldm-3.
More in Energetics
- Standard Enthalpies
- Measuring the Enthalpy Change of A Reaction
- Simple Colorimeter
- Flame Colorimeter
- Displacement Reactions
- Allowing for Heat Loss
- Hess's Law and Thermochemical Cycles
- The Enthalpy Change of Formation
All 24 lessons in Energetics · All AQA AS-level Chemistry topics