Chemistry - Chemical reactions ionic equations
Chemical reactions ionic equations
Equations describing precipitation reactions are often simplified to ionic
equations showing only the species that combine to form the precipitate.
Consider once again the reaction between Ba(NO3)2(aq) and K2SO4(aq),
keeping in mind that in both solutions the soluble ionic compounds will
have dissociated into their respective ions. The reaction can be written in
terms of these ions:
Solubility rules indicate that the K(aq) and NO3(aq) ions are not really
involved in the reaction and so are described as spectator ions. When
equations free of the spectator ions are used to describe precipitation
reactions they are called ionic equations, which must be balanced for both
charge and atoms.
The ionic equation for the reaction between Ba(NO3)2(aq) and K2SO4(aq) is:
Previous | Next