Tuesday, 28 April 2009

unknown solution 5 : ............

physical properties:

odour:
colour:
aspect:
reaction with litmus paper:

chemical properties:

biuret's test
no violet colour
the solution is not protein

molish's test
no violet ring spread by shaking
the solution is not carbohyrate

test with litmus paper
change red litmus paper to blue
the solution is uric acid

confirmatory test

folling's test
dark deep blue
uric acid reduce phosphotungestic acid to tungestin blue

fehling's test
slightly red colour and ppt
the solution slightly reducing sugar

conclusion:
the solution is uric acid