2697824
Questão 1
Questão
Dilute Hydrochloric acid is added then aqueous Barium Nitrate, a white precipitate forms. Which anion is present?
Responda
-
Sulfate (SO42−)
-
Nitrate (NO3−)
-
Carbonate (CO32-)
Questão 2
Questão
How would you determine whether Nitrate (NO3-) ions are present in a solution
Responda
-
Add Acid -> Effervescence -> Carbon dioxide released (turns lime water milky)
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Add Aq. Sodium hydroxide -> add aluminium foil and warm gently -> Ammonia released (turns damp red litmus paper blue)
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Add dilute Hydrochloric acid -> Add Aq. Barium nitrate -> White precipitate
Questão 3
Questão
Which of these is untrue for testing for halides in solution
Responda
-
Iodide - White ppt.
-
Chloride - Cream ppt.
-
Bromide - Yellow ppt.
Questão 4
Questão
Dilute nitric acid is added to a substance and then silver nitrate, a white precipitate forms, what anion is present?
Responda
-
Iodide
-
Carbonate
-
Sulfate
-
Bromide
-
Nitrate
-
Chloride
Questão 5
Questão
To test whether a carbonate anion is present, a dilute acid is added and effervescence is observed and Oxygen released.
Responda
- True
- False
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