The Materials Placing small amount of Placing small amount of

oxalic acid on test tube 1,2 &3 urea on test tubes 4,5,6

The test tubes with their Adding 1ml of water to Heating test tubes 1&4 respective reagents test tubes 1&4

Cooling test tubes 1&4 Adding 1ml of ethanol to Heating test tubes 2&5 test tubes 2&5

Cooling test tubes 2&5 Adding 1ml of benzene to Heating test tubes 3&6

test tubes 3&6

Cooling test tubes 3&6 Result in Part A of the experiment weighing approx. 2g of oxalic acid

Heating 5ml water and oxalic acid Filtering the hot solution Cooling the filtrate in ice water

weighing approx. 2g of urea Heating 5ml ethanol and urea Filtering the hot solution

Cooling the filtrate in ice water Filtering of water filtrate Filtering of ethanol filtate

after cooling after cooling

No urea crystals were formed Crystal of oxalic acid were formed.