IDENTIFICATION OF AN ORGANIC UNKNOWN
Introduction: In this assessed practical we have to plan a sequence of simple chemical test tube tests in order to identify an unknown organic compound containing a functional group. The functional group could be an alkene, primary alcohol, tertiary alcohol, aldehyde, ketone, carboxylic acid, ester or phenol.
Safety: During all experiments Laboratory coats and safety glasses must be worn. When using a Bunsen burner tie long hair back and use a safety mat to protect the bench. Plastic gloves must be worn when handling the chemicals. There are some chemicals that need special attention when handling them:
* 2, 4-DNP - is an irritant to skin and eyes.
* Bromine water - is harmful if ingested or inhaled and prolonged skin contact can cause burns. It is an irritant to the eye and also make sure there is good ventilation.
* Silver nitrate - is an irritant and can cause burns.
* Ammonia - is an irritant and can cause burns.
* Sodium hydroxide - is an irritant to skin and eyes.
* Iron (III) Chloride - is toxic and can cause burns. Can also give off Hydrogen Chloride gas.
* Sodium carbonate - is a low hazard, but still needs to be considered
* Organic unknown - can be considered to be toxic and harmful if swallowed.
If any of the above chemicals come into contact with skin or eyes, wash off immediately with cold water.
* Sodium - reacts violently with water and is highly flammable, therefore keep away from naked flames and water.
Apparatus/Chemical list:
8 Test tubes
Test tube rack
Beaker (500cm3)
Measuring cylinders (10 and 25cm3)
Dropping pipettes
Analytical weighing balance
Introduction: In this assessed practical we have to plan a sequence of simple chemical test tube tests in order to identify an unknown organic compound containing a functional group. The functional group could be an alkene, primary alcohol, tertiary alcohol, aldehyde, ketone, carboxylic acid, ester or phenol.
Safety: During all experiments Laboratory coats and safety glasses must be worn. When using a Bunsen burner tie long hair back and use a safety mat to protect the bench. Plastic gloves must be worn when handling the chemicals. There are some chemicals that need special attention when handling them:
* 2, 4-DNP - is an irritant to skin and eyes.
* Bromine water - is harmful if ingested or inhaled and prolonged skin contact can cause burns. It is an irritant to the eye and also make sure there is good ventilation.
* Silver nitrate - is an irritant and can cause burns.
* Ammonia - is an irritant and can cause burns.
* Sodium hydroxide - is an irritant to skin and eyes.
* Iron (III) Chloride - is toxic and can cause burns. Can also give off Hydrogen Chloride gas.
* Sodium carbonate - is a low hazard, but still needs to be considered
* Organic unknown - can be considered to be toxic and harmful if swallowed.
If any of the above chemicals come into contact with skin or eyes, wash off immediately with cold water.
* Sodium - reacts violently with water and is highly flammable, therefore keep away from naked flames and water.
Apparatus/Chemical list:
8 Test tubes
Test tube rack
Beaker (500cm3)
Measuring cylinders (10 and 25cm3)
Dropping pipettes
Analytical weighing balance