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Why is copper sulphate crystals gently washed with alchohol?
Copper sulfate crystals are washed with alcohol to remove any impurities or excess water that may be present on the surface of the crystals. Alcohol can help to dissolve these impurities and evaporate quickly, leaving behind clean and pure copper sulfate crystals.
What has to be done to a reaction mixture to recover solid silver nitrate?
To recover solid silver nitrate from a reaction mixture, the solution needs to be evaporated to dryness to remove the water content. This will leave behind solid silver nitrate crystals that can then be collected by filtration. The crystals can then be washed with a small amount of cold solvent to remove any impurities before air drying.
How do you prepare common salt?
Common salt, or table salt, is produced through evaporation of seawater or saltwater brine. The process involves collecting seawater in large shallow ponds and letting it evaporate naturally under the sun, leaving behind salt crystals. These crystals are then harvested, washed, and processed to remove impurities before being packaged and sold as table salt.
What is solid material washed away upstream and deposited downstream?
Sediment is the solid material washed away upstream and deposited downstream in a process called erosion or sedimentation. This process can be natural, like rivers depositing sediment in deltas, or human-induced, such as soil erosion due to deforestation or construction activities.
Why to gold particles fall to the bottom of the pan when panning for gold?
Gold particles are denser than the surrounding materials commonly found in the pan, so they settle at the bottom due to gravity. As the pan is agitated, lighter materials are washed away, while the heavier gold particles remain at the bottom due to their weight. This process allows the gold to be concentrated and collected.
