Starting with lead (II) oxide, describe how you would prepare a solid sample of lead (II) Carbonate
To prepare a solid sample of lead (II) carbonate from lead (II) oxide, you would need to react lead (II) oxide with a source of carbonate ions, such as sodium carbonate or potassium carbonate.
The chemical equation for the reaction is:
PbO + Na2CO3 -> PbCO3 + 2NaOH
To carry out this reaction, follow these steps:
1. Measure out a suitable amount of lead (II) oxide powder, and transfer it to a clean, dry reaction vessel, such as a beaker or flask.
2. Weigh out an appropriate quantity of sodium carbonate powder, and add it to the reaction vessel containing the lead (II) oxide. The stoichiometric ratio of lead (II) oxide to sodium carbonate is 1:1. You should add slightly more sodium carbonate than theoretically required to ensure complete reaction.
3. Slowly add distilled water to the reaction mixture with stirring to make a slurry. You may need to heat gently to dissolve the sodium carbonate.
4. Allow the reaction mixture to stir for several minutes until the reaction is complete. The mixture will turn milky-white as the lead (II) carbonate forms.
5. Filter off the solid lead (II) carbonate using a Buchner funnel or filter paper, and wash the residue with distilled water to remove any remaining sodium hydroxide.
6. Dry the solid lead (II) carbonate in an oven or desiccator at a suitable temperature, such as 80-100 °C, until it is completely dry and free from moisture.
7. Weigh the dry lead (II) carbonate and record the mass. You now have a solid sample of lead (II) carbonate.