6.11.2 Qualitative Analysis 2
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Question 1 of 9
1. Question
1 point(s)CHEM0806010
Compound X is tested and the results are shown in the table.Test 1: Aqueous sodium hydroxide is
added and then heated gently
Result: gas given off which turns moist
red litmus paper blueTest 2: dilute hydrochloric acid is added
Result: effervescence, gas given off
which turns limewater milkyWhich ions are present in compound X?
CorrectIncorrect -
Question 2 of 9
2. Question
1 point(s)CHEM0806020
What is used to test for chlorine?CorrectIncorrect -
Question 3 of 9
3. Question
1 point(s)CHEM0806030
Which of the following pairs of aqueous ions both react with dilute sulfuric acid to give a visible result?CorrectIncorrect -
Question 4 of 9
4. Question
1 point(s)CHEM0806040
- A white solid is insoluble in water.
- When it is added to hydrochloric acid, bubbles of gas released.
- When excess aqueous ammonia is added to the solution formed, white precipitate produced and the white precipitate dissolve in excess aqueous ammonia
What is the white solid?
CorrectIncorrect -
Question 5 of 9
5. Question
1 point(s)CHEM0806050
The results of three tests on a solution of compound X are shown in the table.Test 1: aqueous sodium hydroxide added
Result: white precipitate formed, soluble in excessTest 2: aqueous ammonia added
Result: white precipitate formed, insoluble in excessTest 3: acidified barium nitrate added
Result: white precipitate formedCompound X might be ______.
CorrectIncorrect -
Question 6 of 9
6. Question
1 point(s)CHEM0806060
The results of three tests on a solution of compound X are shown.Test 1: aqueous ammonia added
Result: white precipitate formed, soluble in excessTest 2: acid hydrochloric acid added, follow by barium nitrate solution
Result: white precipitate formed.What is compound X?
CorrectIncorrect -
Question 7 of 9
7. Question
1 point(s)CHEM0806070
- Some barium iodide is dissolved in water.
- Dilute sulfuric acid is added to the solution until no more precipitate forms. The precipitate, X, is filtered off.
- Aqueous lead(II) nitrate is added to the filtrate and another precipitate, Y, forms.
What are the colours of precipitates X and Y?
CorrectIncorrect -
Question 8 of 9
8. Question
1 point(s)CHEM0806080
Aqueous sodium hydroxide is added to a solid, X, and the mixture is heated. A brown precipitate is formed and an alkaline gas is given off. Which ions are present in X?CorrectIncorrect -
Question 9 of 9
9. Question
1 point(s)CHEM0806090
What are the reagents can be used to identify the cation and anion in ammonium chloride solution?CorrectIncorrect