Qualitative Analysis of Anions Flashcards
6 anions to be analyzed in Exp 11
CO₃, SO₄, PO₄, SCN, Cl, NO₃
In Exp 11:
Here you will use a small portion of the unknown mixture (___ mL) to perform a spot test for each ion individually
1
In Exp 11:
16 reagents to be tested
- 1M Na2CO3
- 0.5 M Na2SO4
- 1M BaCl2
- 0.5 M Na2HPO4
- 0.5 M (NH4)2MoO4
- 0.5 M KSCN
- 0.1 M Fe(NO3)3
- 0.5 NaCl
- 0.1 M AgNO3
- 0.5 M NaNO3
- 1M CuSO4
- 6 M Acetic Acid
- 6 M NaOH
In Exp 11:
14 materials to be used
- Aluminum granules
- 8 small test tubes
- glass stirring rod
- small 10-mL graduated cylinder
- 250-mL beaker
- stand
- ring clamp
- wire gauze
- small watch glass
- dropper pipets
- blue litmus paper
- red litmus paper
- wash bottle filled with deionized water
- bunsen burner
- centrifuge
In Exp 11: In Test for carbonate ion (CO3)
* Add 1mL of _____ (or your unknown) and 1mL of _______ to a small test tube
- 1M Na2CO3
- 6M HCl
In Exp 11:
Name of Test A
Test for carbonate ion (CO3)
In Exp 11:
Name of Test B
Test for sulfate ion (SO4)
In Exp 11: In Test for sulfate ion (SO4)
* Add 1mL of _______ (or your unknown) and 1mL of ____ to a small test tube. Next add a few drops of 1M _______
- 0.5 M Na2SO4
- 6M HCl
- 1M BaCl2
In Exp 11:
Name of Test C
Test for phosphate ion (PO4)
In Exp 11: In Test for phosphate ion
* add 1mL of ______ (or your known) and 1mL of _____ to a small test tube. Next add a 1mL of ______ and stir thoroughly. Place the test tube in the hot water bath and continue to stir
- 0.5 M Na2HPO4
- 6M HNO3
- 0.5 M (NH4)2MoO4
In Exp 11:
Name of Test D
Test for thiocyanate ion (SCN)
In Exp 11: In Test for thiocyanate ion (SCN)
* Add 1mL of ______ (or your unknown) and 1mL of _______ to a small test tube. Now add 2 drops of _______. A _______ (color) solution indicates the presence of SCN
- 0.5 M KSCN
- 6M acetic acid (HC2H3O2)
- 0.1 M Fe(NO3)3
- dark red
In Exp 11:
Name of Test E
test for chloride ion (Cl2)
In Exp 11: In Test for chloride ion (Cl2)
* add 1mL of _______ (or your unknown) and 1mL of ______ to a small test tube. Next add 2 to 3 drops of _________
- 0.5 M NaCl
- 6M HNO3
- 0.1 AgNO3
In Exp 11:
Name of Test F
test for nitrate ion (NO3)
In Exp 11: In Test for nitrate ion (NO3)
* Add 1mL of _____ (or your unknown) and add 1mL of _____ to a small test tube. Then add a few granules of aluminum metal and put the test tube in the hot water bath. Place a ___ (color) litmus paper directly above the test tube
- 0.5 M NaNO3
- 6M NaOH
- red
In Exp 11:
In order, what anions were tested from test a - f?
- Test for carbonate ion (CO3)
- Test for sulfate ion (SO4)
- Test for phosphate ion (PO4)
- Test for thiocyanate ion (SCN)
- Test for chloride ion (Cl2)
- Test for nitrate ion (NO3)
