Acids, Alkalis and Salts

Which of these is an acid?

• NaCl

• KOH 

• HNO₃

• Mg(NO₃)₂

What pH would you expect a solution of NaOH to be?

• 13

• 7

• 5

• 2

Which of these substances would combine in a neutralisation reaction?

• CH₄ and O₂

• NaCl and HNO₃

• H₂SO₄ and Mg(OH)₂

• HCl and HNO₃

When an acid and a base react, the products will always be:

• Carbon dioxide and water

• A salt and water

• NaCl and H₂O

• A single product which is a covalent compound

An alkali and a base...

• ...both have a pH less than 7; an alkali is a base that is soluble in water

• ...both have a pH more than 7; an alkali is a base that is soluble in water

• ...both have a pH less than 7; an base is an alkali that is soluble in water

• ...both have a pH more than 7; an base is an alkali that is soluble in water

If Hydrochloric acid and Sodium Hydroxide solution were reacted together, the products would be:

• Sodium chloride solution and water

• Solid crystals of Sodium Chloride and water

• Chlorine Hydroxide and Oxygen

• No reaction would occur

When sulfuric acid and a base react, which TWO of these statements are correct?

• The H from the acid combines with the OH from the base to form water

• The metal from the base reacts with the sulfuric component of the acid to form a metal sulfate

• Sulphur dioxide is produced

HNO₃ is Nitric acid. The part of the compound that makes it acidic is:

• The H⁺ ions

• The Nitrogen

• The Oxygen

• The NO₃^- ions

Group 1 metals are known as the Alkali metals. This is because

• The metals are alkaline

• They form alkaline hydroxides when they react with water because their hydroxides are soluble in water

• They are found in the Alkali Flats in Utah, USA

• They were discovered by Dr Alastair "Al" K Ali

Mg(OH)₂ is a base. The part of its composition that makes it a base is:

• The Magnesium ions

• The Oxygen

• The Hydrogen

• The OH^- ions