How to prepare a 1M ferric chloride solution
Answer (2)
To prepare a 1 M solution of ferric chloride, weigh 162.2 grams of FeCl₃, dissolve it in distilled water, and dilute to 1 liter in a volumetric flask. Ensure thorough mixing and safe handling. This solution can be used in various chemical experiments.
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To prepare a 1M ferric chloride (FeCl₃) solution, follow these steps:
Gather Materials:
Ferric chloride (FeCl₃) solid.
Distilled water.
A balance for measuring.
A volumetric flask (1 liter capacity recommended).
Protective gear like gloves and goggles.
Calculate Molar Mass:
The molar mass of FeCl₃ is the sum of atomic masses of iron (Fe) and chlorine (Cl):
Fe: approximately 55.85 g/mol.
Cl: approximately 35.45 g/mol.
FeCl₃ molar mass = 55.85 + (3 \times 35.45) = 162.20 g/mol.
Weigh Ferric Chloride:
To make a 1M solution, you need 1 mole of solute per liter of solution. Thus, weigh 162.20 grams of FeCl₃.
Dissolve in Water:
Carefully transfer the weighed FeCl₃ into the volumetric flask.
Add distilled water to the flask, initially filling it about halfway.
Swirl or stir to dissolve the FeCl₃ completely.
Make Up to Volume:
After the solid has dissolved, fill the flask with distilled water up to the 1-liter mark.
Ensure the solution is well mixed.
Label the Solution:
Clearly label the flask with the concentration and the date of preparation.
Safety Notes:
Ferric chloride can be corrosive, so handle with care.
Do this preparation in a well-ventilated area or under a fume hood to avoid inhaling any dust or fumes.
By following these steps, you will have successfully prepared a 1M ferric chloride solution. Remember, always dispose of any chemical waste according to your local regulations.
