posted by crystal on .
When varsol and iodine in potassium iodide aqueous solution is mixed, two phases form.
What are the colours in each of the 2 phases when 2ml of I2/KI aqueous solution plus 2 ml of varsol are mixed in a test tube?
What are the colours in each of the 2 phases when each of the following are also added to the test tube containing 2 ml of I2/KI and 2 ml varsol and why:
a) 4 ml varsol
b) 4 ml water
c) 2 drops saturated iodine in KI solution
d) 2 drops saturated sodium thiosulphate
e) 2 drops saturated sodium potassium iodide solution