Describe a suitable laboratory procedure for preparing a sample of zinc tetraoxosulphate VI crystals starting with zinc oxide
How crystalline zinc tetra oxosulphate vi from metallic zinc
Four full note
To prepare a sample of zinc tetraoxosulphate VI (also known as zinc sulfate), starting with zinc oxide, you can follow the following laboratory procedure:
1. Weigh and measure the required amount of zinc oxide powder. The amount will depend on the desired quantity of the final product and any specific instructions provided.
2. Set up a beaker or flask and add the measured zinc oxide powder to it.
3. Slowly add concentrated sulfuric acid (H2SO4) to the beaker or flask containing the zinc oxide. Ensure that the addition is done in small portions and with constant stirring. It is important to exercise caution, as the reaction between zinc oxide and sulfuric acid can be exothermic. You may want to perform this step in a fume hood due to the release of sulfur dioxide gas.
4. Continue stirring the mixture until all the zinc oxide has dissolved, and a clear, colorless solution is obtained. This solution contains zinc ions (Zn2+) and sulfate ions (SO4^2-).
5. Optionally, if there are any impurities present, you can filter the solution using filter paper to remove them. This step can improve the purity of the final crystal product.
6. Once the solution is clear and filtered (if necessary), place the beaker or flask containing the solution on a hot plate or in a water bath to heat it gently. Heating helps to promote the crystallization process.
7. Allow the solution to cool down slowly. As it cools, zinc tetraoxosulphate VI crystals will start to form. The slow cooling process encourages the formation of larger and more well-defined crystals.
8. Once the solution has cooled down completely, collect the formed crystals by using filtration or any suitable method. Rinse the crystals with a small amount of cold distilled water to remove any residual impurities.
9. Finally, allow the washed crystals to air dry or place them in a desiccator to remove any remaining moisture. Once dry, you can store the zinc tetraoxosulphate VI crystals in a suitable container for future use.
Note: While performing any laboratory procedure, it is important to follow all safety precautions, such as wearing appropriate personal protective equipment (PPE), working in a well-ventilated area, and handling chemicals with care. Additionally, always refer to the specific instructions and guidelines provided by your institution or laboratory supervisor.
I assume you mean ZnSO4 but your naming is screwy and incorrect.
ZnO + H2SO4 ==> HwO + ZnSO4