Inspection of ethanol combustion products CO CO2 H2O 1 Concentrated sulfuric acid 2 A clarified lime water B sodium hydroxide solution C clarified lime water 3 Hot copper oxide powder 4 Anhydrous copper sulfate How to sort? What is the function of ABC bottle solution? What does 3 do? Note: ABC devices in 2 are connected in one piece. Verify ethanol combustion product CO CO2 H2O 1 Concentrated sulfuric acid 2 A clarified lime water B sodium hydroxide solution C clarified lime water 3 Hot copper oxide powder 4 Anhydrous copper sulfate How to sort? What is the function of ABC bottle solution? What does 3 do? Note: ABC devices in 2 are connected in one piece.

Inspection of ethanol combustion products CO CO2 H2O 1 Concentrated sulfuric acid 2 A clarified lime water B sodium hydroxide solution C clarified lime water 3 Hot copper oxide powder 4 Anhydrous copper sulfate How to sort? What is the function of ABC bottle solution? What does 3 do? Note: ABC devices in 2 are connected in one piece. Verify ethanol combustion product CO CO2 H2O 1 Concentrated sulfuric acid 2 A clarified lime water B sodium hydroxide solution C clarified lime water 3 Hot copper oxide powder 4 Anhydrous copper sulfate How to sort? What is the function of ABC bottle solution? What does 3 do? Note: ABC devices in 2 are connected in one piece.

4123
Check whether CO2 is generated in lime water of A clarification and remove CO2 in sodium hydroxide solution. Check whether CO2 is completely removed in lime water of C clarification
3 Check for CO generation

4123
Check whether CO2 is generated in lime water of A clarification and remove CO2 in sodium hydroxide solution. Check whether CO2 is completely removed in lime water of C clarification
3 Verify if CO is generated

How to balance H2CrO4+H2O2=H2O+Cr (OH)3+O2

2H2CrO4+3H2O2=2H2O+2Cr (OH)3+3O2