Acid, base and salt 6.1 (Part 2)

The properties of acids are due to the presence of

• hydrogen molecules

• hydroxide ions

• hydrogen atoms

• hydrogen ion

Which of the following causes alkaline properties of ammonia aqueous solution?

• H⁺

• NH₃

• OH^-

• NH₄⁺

A farmer found that the soil in his garden is too acidic.

Which substance is suitable to reduce the acidity of the soil?

• Sodium chloride

• Calcium oxide

• Barium nitrite

• Potassium iodide

Which of the following will show acidic property?

• Glacial ethanoic acid

• Aqueous ethanoic acid

• Solid ethanedioic acid

• Solid ethanedioic acid in dry propanone

Which characteristic of hydrogen chloride enables it to show acidic properties in water?

• Dissolves in water

• Contains hydrogen in its molecule

• Contains chlorine in its molecule

• Ionises in water to form hydrogen ions

The presence of (a)   causes an acidic substance to show its acidic properties.