The following tests were carried out on three separate portions of a colourless solution R.

a) From the information in test (i), name a cation which is not present in solution
(b) Identify a cation, which is likely to be present in solution S
(c) Write an ionic equation for the reaction which takes place in test(ii)

Answer:

a)Lead ion, Silver ion or Mercury ion
b)#Zn^(2+)#
c)#Zn^(2+)(aq)+CO_3^(2-)(aq)rightarrowZnCO_3(s)#

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