Slide 1

Topic 9
Reactions
of
Acids


Slide 2

Acids and Metal Carbonates
Experiment
Aim: To investigate the reaction between
metal carbonate and acids.
Method:
Limewater

Acid
Metal
Carbonate


Slide 3

Results:
Effect of gas produced on
Reaction

Limewater

Sodium Carbonate +
________
Copper carbonate +
_________

Conclusion:

Carbonates react with acids to produce
CO2(g) which is an acidic gas.


Slide 4

Acids and Metal Carbonates
• Carbonate rocks are used in a lot of buildings.
When acid rain falls on these buildings the acid
reacts with the carbonate in a neutralisation
reaction.
Metal Carbonate +Acid  Salt+Water+Carbon dioxide

Calcium carbonate
+Hydrochloric acid

 Calcium chloride+
water+carbon dioxide

CaCO3 + HCl  CaCl2 + H2O + CO2


Slide 5

Examples
Calcium carbonate  Calcium nitrate + water
+ Nitric acid
+ carbon dioxide

CaCO3 + 2HNO3  Ca(NO3)2 + H2O + CO2


Slide 6

Magnesium carbonate+  Magnesium chloride
hydrochloric acid
+ water +carbon dioxide

MgCO3 + HCl

 MgCl2 + H2O + CO2

In these reactions the H+ of the acid
reacts with the CO3- ions of the metal
carbonate to form water and carbon
dioxide. The H+ ion is replaced by the metal
ion: Neutralisation reaction.