Heat of Reaction (5)

Steps to calculate the heat of displacement of iron, Fe from its salt solution

Step 2: Calculate the number of moles of iron, Fe displaced from iron(II) sulphate, FeSO4 solution

Steps to calculate the heat of displacement of iron, Fe from its salt solution

Step 3: Calculate the heat change

Steps to calculate the heat of displacement of iron, Fe from its salt solution

Step 4: Calculate the heat change for 1 mole of iron, Fe displaced

Steps to calculate the heat of displacement of iron, Fe from its salt solution

Step 5: Write the heat of displacement, ∆H

Neutralisation (1)

Is a reaction between an acid and an alkali to produce only salt and water

Type of reaction of neutralisation

Exothermic reaction

Neutralisation (2)

Occur when hydrogen ions, H+ from acid reacts with hydroxide ions, OH− from alkali to form water, H2O molecules

Definition of the heat of neutralisation

The heat of neutralisation is the heat change when one mole of water is formed from the reaction between an acid and an alkali

The ionic equation for neutralisation

H+(aq) + OH−(aq) → H2O(l)

Neutralisation reactions can occur between acids and alkalis of different strengths as follows (1)

Strong acid and strong alkali