The website has the complete lesson note for all the subjects in secondary school but this piece showcases the SS1 Chemistry Lesson Note on Carbon (II) Oxide: Preparations; Properties and Uses. You can use the website search button to filter out the subject of interest to you.
CLICK HERE to download the complete Document: DOWNLOAD HERE
CARBON(II) OXIDE
LABORATORY PREPARATION OF CO [in the fume cupboard]
Three methods can be used to prepare CO in the lab and they are as follows;
- Ethanedioc acid crystals, [H2C2O4.2H2O]
The equation for the reaction is given as shown below;
H2C2O4.2H2O(s) decomposed → 3H2O(l) + CO(g) + CO2(g)
Note: That conc. H2SO4 is a drying agent, it is there to remove the elements of water while KOH removes CO2(g)
CO2(g) + 2KOH(aq) → K2CO3(aq) + H2O(l)
2(a) Sodium Methanoate crystals
2HCOONa(s) + H2SO4(aq) → Na2SO4(aq) + 2H2O + 2CO(g)
- Methannoic acid
HCOOH(l) → CO(g)
Show that H2SO4 removes water, a dehydrating agent
- Reduction of CO2(g) to CO as shown below
CO2(g) + C(s) → 2CO(g)
PHYSICAL PROPERTIES OF CO
- It is colourless, odourless and tasteless gas.
- It is slightly lighter than air.
- It is only slightly soluble in water, but insoluble in alkalis.
- It is soluble in ammoniacal solution of copper(I) chloride.
- It is a poisonous gas, hence, prepared in fume cupboard.
- It is a neutral gas therefore it does not have any action on the litmus paper.
CHEMICAL PROPERTIES AND USES OF CO
- It is used as fuel because it supports combustion.
- It is a useful reducing agent because it is readily reduce to CO2(g) e.g.
- CO(g) + H2O → CO2(g) + H2(g)
- CO(g) + CuO(s) → Cu(s) + CO2(g)
- 3CO(g) + Fe2O3(s) → 2Fe(s) + 3 CO2(g)
- CO(g) + PbO(s) → Pb(s) + CO2(g)
Note: The product of combustion or oxidation of CO is CO2; confirmed by its ability to turn lime water milky.
Click on the Downloadable Button to get the FULL NOTE
