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RisingSun9681
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Sorry if this is a dumb or noob question, but I have some FeCl3•6H2O crystals, and I want a 0.5M solution. How do I do it?
In order to make a 0.5M solution, you will need to dissolve 0.5 moles of FeCl3•6H2O crystals in 1 liter of solution. To measure this out, you will need to use a balance to weigh out the appropriate amount of crystals based on their molar mass. For example, if the molar mass of FeCl3•6H2O is 270.3 g/mol, you will need to weigh out 135.15 grams of crystals.
No, it is important to use the correct solvent for your solution. In the case of FeCl3•6H2O, the most commonly used solvent is water. This is because the water molecules can hydrogen bond with the chloride ions in FeCl3, helping to dissolve the crystals and create the desired solution.
To dissolve the crystals, you will need to heat the solvent (water) to a gentle boil. Then, slowly add the crystals to the solvent while stirring continuously. This will help the crystals dissolve more quickly and evenly. Once all the crystals have dissolved, allow the solution to cool before measuring out the 0.5M solution.
FeCl3•6H2O crystals can be corrosive and may cause skin irritation. It is important to wear gloves and protective eyewear when handling the crystals. If any crystals come into contact with your skin, wash the area immediately with soap and water. Be sure to also dispose of any leftover crystals or solution properly, following your institution's guidelines.
Yes, you can store the solution for future use. It is recommended to store it in a labeled, sealed container in a cool, dry place. Be sure to check the concentration of the solution before using it again, as some of the water may evaporate over time, leading to a more concentrated solution.