Exploring Neutralisation Reactions

What is a common example of neutralisation in daily life?

• Using baking soda to relieve heartburn.

• Using salt to preserve food.

• Using lemon juice to enhance flavor.

• Using vinegar to clean windows.

How does neutralisation help in treating acid indigestion?

• Neutralisation increases stomach acidity, worsening acid indigestion.

• Neutralisation reduces stomach acidity, relieving acid indigestion.

• Neutralisation only masks the symptoms without addressing the cause.

• Neutralisation has no effect on stomach acidity or indigestion.

What are the products of a neutralisation reaction?

• Hydrogen and oxygen

• Acid and base

• Carbon dioxide and ammonia

• Water and salt

Write the chemical equation for the neutralisation of hydrochloric acid with sodium hydroxide.

• HCl + NaOH → NaCl + H2O

• HCl + KOH → KCl + H2O

• HCl + Ca(OH)2 → CaCl2 + H2O

• HCl + Na2CO3 → NaCl + H2O + CO2

What is the role of an acid in a neutralisation reaction?

• The acid neutralises the base by increasing its temperature.

• An acid acts as a catalyst in neutralisation reactions.

• The role of an acid in a neutralisation reaction is to donate protons to a base.

• The role of an acid is to absorb protons from a base.

How can neutralisation be used in agriculture?

• Neutralisation helps in the irrigation process by adding nutrients.

• Neutralisation increases soil acidity for better crop yield.

• Neutralisation is used to adjust soil pH for better crop growth.

• Neutralisation is used to enhance pest resistance in crops.

What happens to the pH of a solution during neutralisation?

• The pH of the solution approaches 7 during neutralisation.

• The pH of the solution remains constant regardless of the reactants.

• The pH of the solution increases to above 14 during neutralisation.

• The pH of the solution decreases significantly during neutralisation.

Give an example of a neutralisation reaction that occurs in the kitchen.

• Vinegar and baking soda reaction.

• Oil and vinegar emulsion.

• Lemon juice and sugar reaction.

• Salt and water reaction.

What is the chemical equation for the neutralisation of sulfuric acid with potassium hydroxide?

• H2SO4 + 2 KOH → K2SO4 + 2 H2O

• H2SO4 + 2 NaOH → Na2SO4 + 2 H2O

• H2SO4 + KOH → K2SO4 + H2O

• H2SO4 + Ca(OH)2 → CaSO4 + 2 H2O

Why is neutralisation important in environmental science?

• Neutralisation has no effect on soil quality or plant growth.

• Neutralisation increases acidity in water bodies, harming aquatic life.

• Neutralisation is only relevant in industrial processes, not ecosystems.

• Neutralisation helps maintain balanced pH levels in ecosystems, protecting plant and animal life.