SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A sample of salt X is a soluble ammonium chloride salt.You are required to verify the cations and anions that are present in that salt sample. What is the pair of reagents needed to confirm the presence of cation and anion?
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Cation:Nessler reagentAnion:Nitric acid and silver nitrate solution
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Cation:Nessler reagentAnion:Nitric acid and barium nitrate solution
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Cation:Potassium hexacyanoferrate(III) solutionAnion:Nitric acid and barium nitrate solution
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Cation:Potassium hexacyanoferrate(III) solutionAnion:Nitric acid and silver nitrate solution
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Explanation:
Detailed explanation-1: -Ammonium ions can be identified in a solution by adding dilute sodium hydroxide solution and gently heating. If ammonium ions are present, they will be converted to ammonia gas. Ammonia has a characteristic choking smell. It also turns damp red litmus paper or damp universal indicator paper blue.
Detailed explanation-2: -The part that the acid contributes is called anion in the formation of a salt and the part that the base contributes is called cation.
There is 1 question to complete.