Home
Class 12
CHEMISTRY
30 mL of methyl alcohol (density = 0.8 g...

30 mL of methyl alcohol (density = 0.8 g/cc) is mixed with 70 mL of water (density = 1.0 g/cc) at `25^@C` to give a solution of density 0.94 g/cc. Find the mole fraction, molarity and molality.

Text Solution

AI Generated Solution

To solve the problem step by step, we will calculate the mass of methyl alcohol and water, then find the mole fraction, molarity, and molality of the solution. ### Step 1: Calculate the mass of methyl alcohol (CH₃OH) Given: - Volume of methyl alcohol = 30 mL - Density of methyl alcohol = 0.8 g/mL Using the formula: ...
Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

30 mL of methanol (density 0.7980 g/mL) on mixing with 70 mL of water (density 0.9984 g/mL) at 298 K gave a solution of density 0.9575 g/mL. Calculate (i) mole fraction, (ii) molality, (iii) molarity, and (iv) f.p. of the solution. K_f(H_2O) = 1.86 .

If 20 mL of ethanol (density =0.7893g//mL) is mixed with 40mL water (density = 0.9971g//mL) at 25^(@)C , the final slution has density of 0.9571g//mL . Calculate the percentage change in total volume of mixing. Also calculate the molarity of alcohol in the final solution.

Knowledge Check

  • When 10 mL of ehtyl alcohol (density = 0.7893 g mL^(-1)) is mixed with 20 mL of water (density 0.9971 g mL^(-1)) at 25^(@)C , the final solution has a density of 0.9571 g mL^(-1) . The percentage change in total volume on mixing is

    A
    `3.1%`
    B
    `2.4%`
    C
    `1%`
    D
    None of these

  • 30 mL of CH_(3)OH (d = 0.8 g//cm^(3)) is mixed with 60 mL of C_(2)H_(5)OH(d = 0.92 g//cm^(2)) at 25^(@)C to form a solution of density 0.88 g//cm^(3) . Select the correct option(s) :

    A
    Molarity and molarity of resulting solution are `6.33 M` and `13.59 m` respectively.
    B
    The molar friction of solute and molarity are `0.38` and `13.59 m` respectively.
    C
    Molarity and percentage change in volume are `13.5 M` and zero repectively.
    D
    Mole fraction of solvent and molality are `0.62` and `13.59 m` respectively.

  • Brine has a density of 1.2 g/cc. 40 cc of it are mixed with 30 cc of water. The density of solution is

    A
    2.11 g/cc
    B
    1.11g/cc
    C
    12.2g/cc
    D
    20.4g/cc

    • Similar Questions

    Explore conceptually related problems

    1g of NaCl is dissolved in 10g of a solution the density of which is 1.07g//"cc" . Find the molality and molarity of NaCl.

    What is the volume of ethyl alcohol (density 1.15 g/cc) that has to be added to prepare 100 cc of 0.5 M ethyl alcohol solution in water ?

    The volume of ethyl alcohol (density 1.15 g/cc) that has to be added to prepare 100 cc of 0.5 M ethyl alcohol solution in water is

    On mixing 15.0 ml of ethyl alcohol of density 0.792"g ml"^(-1) with 15 ml of pure water at 4^(@)C , the resulting solution is found to have a density of 0.924"g ml"^(-1) . The percentage contraction in volume is :

    Number of moles of water in 1 L of water with density 1 g/cc are

    Home
    Profile