An aqueous solution has molaliity equals to 11.11 then what is the mol...
"An aqueous solution has morality equals to 11.11 that means 11.11 moles of solute are present in 1 kg or 1000 gm of solvent according to formula of molality. As what is solvent no mentioned here we will consider water as solvent ok. as 18 gm of water constitute 1 mole of water then 1000 gm of water will constitute 55.55 moles of water. such Now we know no. of moles of both solute and solvent let's put these values in formula of molefraction Molefraction = no. of moles of solute / (no. of moles of solute + no. of moles of solvent) hence ,,molefraction = 11.11 /(11.11 + 55.55 ) =11.11/ 66.66 = 0.167
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An aqueous solution has molaliity equals to 11.11 then what is the mol...
11.11 molal sol means.... 11.11 moles of solute in 1000g of water..( here solvent is not specificaly mentioned.. so take it as water)...if 18g of water constitutes 1mole, then 1000g of water will be 55.55 moles.so mole fraction of solute= no. of moles of solute/ (no. of moles of solute + no. of moles of solvent)..11.11/(11.11+55.55)..
An aqueous solution has molaliity equals to 11.11 then what is the mol...
Understanding Molality
Molality (m) is defined as the number of moles of solute per kilogram of solvent. In this case, the molality of the solution is given as 11.11 mol/kg.
Calculating Moles of Solute
To find the mole fraction, we first need to determine the number of moles of solute. Assuming we have 1 kg of solvent (water in this case):
- Moles of solute = Molality × Mass of solvent (in kg)
- Moles of solute = 11.11 mol/kg × 1 kg = 11.11 moles
Calculating Moles of Solvent
Next, we need to calculate the moles of solvent. The molar mass of water (H2O) is approximately 18 g/mol. Therefore, for 1 kg (1000 g) of water:
- Moles of solvent = Mass of solvent (g) / Molar mass of water (g/mol)
- Moles of solvent = 1000 g / 18 g/mol ≈ 55.56 moles
Finding Mole Fraction
Mole fraction (X) of solute is calculated using the formula:
- Mole fraction of solute = Moles of solute / (Moles of solute + Moles of solvent)
Substituting the values:
- Mole fraction of solute = 11.11 / (11.11 + 55.56)
- Mole fraction of solute = 11.11 / 66.67 ≈ 0.1667
Final Result
Thus, the mole fraction of the solute in the solution is approximately 0.1667.
This indicates that about 16.67% of the solution's composition is the solute by mole fraction.