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3 g of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is
  • a)
    18 mg
  • b)
    36 mg
  • c)
    42 mg
  • d)
    54 mg
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
3 g of activated charcoal was added to 50 mL of acetic acid solution (...
Number of moles of acetic acid adsorbed

∴ Weight of acetic acid adsorbed
= 0.9 × 60 mg = 54 mg
Hence, the amount of acetic acid adsorbed per g of charcoal = 
Hence, option (1) is correct.
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Most Upvoted Answer
3 g of activated charcoal was added to 50 mL of acetic acid solution (...
Given:
- Mass of activated charcoal = 3 g
- Volume of acetic acid solution = 50 mL
- Concentration of acetic acid solution = 0.06 N
- Strength of the filtrate = 0.042 N

To find:
Amount of acetic acid adsorbed per gram of charcoal

Solution:

Step 1: Calculate the number of moles of acetic acid in the initial solution.
Number of moles of acetic acid = Concentration × Volume
= 0.06 N × 0.050 L (as 50 mL = 0.050 L)
= 0.003 mol

Step 2: Calculate the number of moles of acetic acid in the filtrate.
Number of moles of acetic acid in the filtrate = Strength × Volume
= 0.042 N × 0.050 L
= 0.0021 mol

Step 3: Calculate the amount of acetic acid adsorbed by the charcoal.
Amount of acetic acid adsorbed = Initial moles - Filtrate moles
= 0.003 mol - 0.0021 mol
= 0.0009 mol

Step 4: Calculate the amount of acetic acid adsorbed per gram of charcoal.
Amount of acetic acid adsorbed per gram of charcoal = (Amount of acetic acid adsorbed / Mass of charcoal) × 1000
= (0.0009 mol / 3 g) × 1000
= 0.3 mol/g × 1000
= 300 mg/g
= 30 mg/g

Hence, the amount of acetic acid adsorbed per gram of charcoal is 30 mg, which corresponds to option A.
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3 g of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) isa)18 mgb)36 mgc)42 mgd)54 mgCorrect answer is option 'A'. Can you explain this answer?
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