salts are very useful and they can be made by netrualising acids with alkalis
an example of a reaction to show this is...
* when copper oxide is in excess neutralises the sulfuric acid.
* and this makes a salt of copper sulphate plus water
* it is then filter to get rid of any unwanted copper oxide
an example of this in every day life is sugar free gum and what happens is the sugar in the chewing gum attacks the enamel on the teeth and it also produces more alkaline via saliva in the mouth which neutralises the acid.
salts can also be made by reacting acids with metal carbonate compounds...
Ca 2+ CO32-(s) + 2 H +Cl-(aq) → Ca 2+Cl2 -(aq) + CO2(g) + H2O(l)
observations seen...
* effervesencing
*CO2 is given off
neutralisation...
what happens when a alkali netralises a acid?
basically
*the acid gives off the H+ ion during neutralisation
*and then the base accepts the donated H+ ion
*in replace of the h+ ion there are placed by metal ions or nh4+
remember that when an acid and alkali react it gives a salt plus water so an easy way to work out the salt is to take the water away from the reactants which will give you the salt you need.
an example of this is the reaction between sodium hydroxide and hydrocholric acids
-
HCl + NaOH → NaCl + H2O
and this shows that once you take out the factor of water you are left with sodium and cholirde to make a sodium chloride salt.
