Chapter 11 Qualitative Analysis Anions
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Chemistry
9th Grade
Used 19+ times
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7 questions
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1.
MATCH QUESTION
1 min • 1 pt
Drag and drop the tests into the boxes to complete the table below.
(Match the empty boxes in the image with the options below by selecting the empty box and the correct option.)
Add dilute nitric acid, then add aqueous barium nitrate.
Nitrate NO3-
Add dilute nitric acid, then bubble the gas evolved into limewater
Sulfate SO42-
Add aqueous sodium hydroxide, then add some aluminum powder. Warm
Carbonate CO32-
Add dilute nitric acid, then add aqueous silver nitrate.
Chloride Cl-
2.
MATCH QUESTION
1 min • 1 pt
Drag and drop the observation into the boxes to complete the table below.
(Match the empty boxes in the image with the options below by selecting the empty box and the correct option.)
A white precipitate forms.
Sulfate SO42-
A yellow precipitate forms.
Iodide I-
A gas evolves, which turn damp red litmus paper blue.
Carbonate CO32-
A gas evolves, which forms a white precipitate when bubbled through limewater.
Nitrate NO3-
3.
MATCH QUESTION
1 min • 1 pt
Drag and drop the observation into the boxes to complete the table below.
(Match the empty boxes in the image with the options below by selecting the empty box and the correct option.)
Iodide I-
Carbonate CO32-
Sulfate SO42-
Nitrate NO3-
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
How much anion solution do you require for each anion test?
enough to fill half the test tube
enough to fill the entire test tube
only about 2 cm3
Answer explanation
Similar to the cation tests, you should add enough anion solution to cover about 2 cm height from the base of the test tube (no need to use ruler, estimation is enough).
5.
DRAG AND DROP QUESTION
30 sec • 1 pt
[NItrate test] Which of the following should be performed on the nitrate solution in the correct order?
1. (a)
2. (b)
3. (c)
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
[Carbonate/Sulfate/Chloride/Iodide test] What acid should be added to the anion solution?
hydrochloric acid
nitric acid
sulfuric acid
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
[Carbonate/Sulfate/Chloride/Iodide test] How much acid should be added to the anion solution?
1 drop only
same volume as the anion solution
Answer explanation
Sufficient acid must be added to ensure that any possible carbonate ion impurities can react and be removed by the acid.
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