1. When using silver nitrate to test for the presence of chloride ions in aqueous solution,it is important to add another reagent to prevent interference by any carbonate ions which would form a white precipate of Ag2CO3.
Identify this other reagent
Write an equation to show how this other reagent reacts with sodium carbonate.
is it NaCO3+ 2HNO3 -> Na(NO3)2 + H2O + CO2 This is to get rid of CO2 which is shown by the effervescence?
You have the formulae of sodium carbonate and sodium nitrate incorrect, but the idea is good, although the carbon dioxide is irrelevant as you are trying to get rid of the carbonate ions.
1. When using silver nitrate to test for the presence of chloride ions in aqueous solution,it is important to add another reagent to prevent interference by any carbonate ions which would form a white precipate of Ag2CO3.
Identify this other reagent
Write an equation to show how this other reagent reacts with sodium carbonate.
The reagent would be nitric acid. The equation is:
Na2CO3 + 2HNO3 ==> 2NaNO3 + H2O + CO2
Removing the spectator ions gives you the following ionic equation:
You have the formulae of sodium carbonate and sodium nitrate incorrect, but the idea is good, although the carbon dioxide is irrelevant as you are trying to get rid of the carbonate ions.
There's no point in giving someone an answer, it's much more helpful to everyone if you give the OP nudges in the right direction as then they can figure out things for themselves.
The aim is to help the OP understand the question, not to show off how smart you are.
The reagent would be nitric acid. The equation is:
Na2CO3 + 2HNO3 ==> 2NaNO3 + H2O + CO2
Removing the spectator ions gives you the following ionic equation:
CO32- + 2H+ ==> H2O + CO2
The presence of some halide ions in solution can be detected using aqueous silver nitrate and aqueous ammonia.Identify a halide ions which, on addition of aqueous silver nitrate , forms a precipitate that is insoluble in concentrated aqueous ammonia.Identify a halide ion which cannot be detected using these reagents.