A reaction between hydrochloric acid and a metal will produce...

• oxygen.

• carbon dioxide.

• hydrogen gas.

• limewater.

hydrochloric acid + magnesium ->

• magnesium chloride and water

• magnesium oxide

• magnesium hydroxide + chlorine

• magnesium chloride + hydrogen

2HCl + 2Mg ->

• H + MgCl

• H2 + 2MgCl

• H + 2MgCl

• H2 + MgCl

A neutralisation reaction between and acid and an alkali usually produces...

• carbon dioxide and water.

• salt and hydrogen.

• salt and water.

• hydrogen and water.

A neutralisation reaction is usually .......... (heat releasing).

• exothermic.

• endothermic.

• corrosive.

• flammable.

sodium hydroxide + hydrochloric acid ->

• chlorine hydroxide + hydrogen

• sodium hydroxide + water

• sodium chloride + hydrogen

• sodium chloride + water

A reaction between a carbonate and acid will usually produce ...

• oxygen.

• hydrogen.

• carbon dioxide.

• chlorine gas

Carbon dioxide will turn .......... milky.

• calcium carbonate

• hydrochloric acid

• water

• limewater

CaCO3 + 2HCl ->

• CaCl2 +H0+CO2

• CaCl2 +H20+CO

• CaCl +H20+CO2

• CaCl2 +H20+CO2

Evidence for the the reaction between copper oxide and sulphriuc acid includes ...

• hydrogen being produced.

• a colour change.

• carbon dioxide being produced.

• neutralisation.