1. Ethanoic acid test

2. 3 reactants needed
Name process and how long.
Draw diagram of apparatus
Equation
State and explain colour change
Which reactant in excess?
Limiting reactant?
Name 2 Impurities and how are they removed?
pH of ethanoic? Why?
Where is this reaction used in everyday life?
Name the oxidising agent.

3. 3 reactants needed [3] Cr2O72- / H+ / C2H5OH
Name process and how long.[2] Reflux / 30 mins
Draw diagram of apparatus [6]
Equation [2+2] 3 / 2 / 16 = 3 /24 /11
State and explain colour change [5] amber / to green / Cr (VI) / reduced / to Cr3+
Which reactant in excess? [1] dichromate
Limiting reactant? [1] ethanol
Name 2 Impurities and how are they removed? [4] water / anhydrous Na2SO4 / shake 5 mins / filter / ethanol / fractional distillation
pH of ethanoic? Why? [2] 4-5 / weak acid
Where is this reaction used in everyday life? [1] breathalyser
Name the oxidising agent. [1] dichromate [30]