Chemicals Tests for Anions in Various Salts

Chemicals Tests for Anions in Various Salts

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Chemicals Tests for Anions in Various Salts


APPARATUS

Spatula

Test tubes and racks

Pipettes

Chemicals used

Hydrochloric acid

Nitric acid solution

Barium chloride (harmful)

Silver nitrate solution

Metal salts used for testing

Potassium chloride (KCI)

Iron chloride (FECI3)

Sodium sulphate (NASO4)

Calcium carbonate (CACO3)

Lead carbonate (PBCO3)

Tap water

RISK ASSESMENT

Potassium chloride

Explosive when mixed with combustion materials. Never use fabric
gloves to handle substance.

Harmful if inhaled or swallowed. Solution labelled if stronger then 2m
.it may cause your eyes and skin to irritate.

These substances are dangerous with material like sugar, wood, clothes
and etc. these solution ignite easily burn vigorously when dry. This
should not be made available in the lab with concentrated sulphur.

Iron chloride

Sodium sulphate

Harmful if swallowed. Irritant to eyes skin and respiratory system.

Calcium carbonate

Irritant to eyes. Avoid raising and it also irritant to eyes. Keep it
away from water it could cause water to boil if because of the salt.
Contact with combustion material may cause fire.

Lead carbonate

Harmful if inhaled or swallowed. Danger of cumulative effects.

Tap water

Don’t spill it on chemicals.

Important = If you spill any chemicals on your skin and eyes quickly
wash it for it for 10 min and if you can still feel it keep it like
that until you don’t feel anything. Then get it checked by doctor.

METHOD

· Put potassium chloride salts in a test tube using a spatula.

· Add few drops of nitric acid using a pipette. If the salt fizzes
(gives gas off), record the result in the table below and add acid
drops 1 by 1 until it no longer fizzes.

· Add distilled water to 1cm depth. Mix well.

· Add silver nitrate using a clean pipette. Record the results.

· Put the same salt into another test tube.

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Using a spatula.

· Add few drops of hydrochloric acid using a clean pipette. if it
fizzes (gives off gas) ,record the result in a table and add more acid
drops 1 by 1 until it no longer fizzes.

· Add distilled water to 1cm depth. Mix well.

· Put a few drops of barium chloride using a clean pipette. Record the
results.

· Repeat steps 1 to 8 using the four salts.

· Put the tap water into 2 clean tubes which depth should be 1 cm. Put
little drops of nitric acid using a clean pipette. Add a few drops off
barium chloride solution into the test tube. Record the results.

RESULTS

Metal salt used

Nitric acid

Does it fizz?

Add silver nitrate solution

Hydrochloric acid. Does it fizz?

Add barium chloride solution

Potassium chloride

NO FIZZ

PECEPITATE

NO FIZZ

FIZZES

Iron chloride

NO FIZZ

PECEPITATE

NO FIZZ

NO FIZZ

Sodium sulphate

NO FIZZ

NO FIZZ

NO FIZZ

PECEPITATE

Calcium carbonate

FIZZES GIVES OF BUBBLES

PECEPITATE

FIZZES

NO FIZZ BUT PECEPITATE

Lead carbonate

FIZZES

NO FIZZ

PECEPITATE AND FIZZES

PECEPITATE

Tap water

NO FIZZ

FIZZES

NO FIZZ

NO FIZZ


CONCLUSION

After all the chemical experiments I found out which chemicals fizzes
and precipitate when it is mixed with other chemicals as l have shown
above in the table. As you see above that when nitric acid is mixed
with calcium carbonate it fizzes so as lead carbonate and when mixed
with hydrochloric acid it fizzes as well because it has carbonate
material that makes it fizz. Where as some the material are not
fizzing when they mixed with the acid because they don’t get those
chemicals, which make them fizz.
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