Acids, Bases, Salts

Identify the correct formulae for the three common lab acids

• H₂SO₄, HNO₂, HCl

• HCl, HNO₃, H₂SO₃

• H₂SO₄, HCl, HNO₃

• HNO₃, HCl₂, H₂SO₄

Which of the following is incorrect?

• acid + metal carbonate -> salt + carbon dioxide + water

• acid + alkali -> salt + water

• acid + metal -> salt + water

• acid + base -> salt +water

An acid is a...

• proton donor

• electron donor

• electron acceptor

• proton acceptor

Select the chemical for X in the following equation:

2 HCl + X -> H₂O + CuCl₂

• Cu(OH)₂

• CuCO₃

• CuO

• Cu

The formulae of the salt formed when sulfuric acid reacts with aluminium hydroxide is...

• Al₂(SO₄)₃

• Al₃(SO₄)₂

• AlSO₄

• Al₂SO₄

The best description of a salt is...

• Substance formed on neutralisation

• Formed when the hydrogen of an acid is replaced by a metal or ammonium ion

• Formed when the hydrogen of an acid is replaced by a metal or NH₄

• Formed when an acid reacts with an alkali

What would you see if calcium metal was added to excess hydrochloric acid?

• Effervescence

• Effervescence and calcium dissolving

• Calcium dissolving

• Effervescence and a colour change

Which of these reactants is the best combination to use to make zinc nitrate?

• nitric acid + zinc hydroxide

• nitric acid + zinc sulfate

• zinc oxide + nitrous acid

• zinc chloride + nitric acid

Which of the following completes the equation:

? + nitric acid -> ammonium nitrate

• sodium nitrate

• ammonia

• calcium hydroxide

• ammonium sulfate

Which statement is incorrect?

• An alkali releases H⁺ ions in aqueous solution

• An alkali is a water soluble base

• acid + alkali -> salt + water

• neutralisation is the reaction of H⁺ and OH^- ions to form water