Home
Class 11
CHEMISTRY
An aqueous solution of sodium chloride i...

An aqueous solution of sodium chloride is marked `10%(w//w)` on the bottle. The density of the solution is `1.071 gmL^(-1)`. What is the molity and molarity? Also, what is the mole fraction of each components in the solution?

Text Solution

Verified by Experts

`100 g` solution contains `10 g NaCl`
`w= 10 g, m_(NaCl)= 58.5`,
Volume of solution `=(100)/(1.071xx1000)"litre"`
`w_(H_(2))o= 100-10= 90 g`
`"Molarity"=("Wt.of soulute")/("mol.wt.of solute"xxV_("in"L))`
`=(10xx1.071xx1000)/(58.5xx100)=1.83M`
`"Molality"=("Wt.of solute")/("mol.wt.of solute" xx "weight of solvent in kg")`
`=(10xx1000)/(58.5xx90)=1.90 m`
Mole fraction of `NaCl=(w//m)/((w)/(m)+(W)/(M))=(10//58.5)/((10)/(58.5)+(90)/(18))= 0.03`
Mole fraction of `H_(2)O=1-0.03= 0.97`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MOLE AND EQUIVALENT CONCEPT

    P BAHADUR|Exercise Exercise (2) prevous year numberical problems|25 Videos

  • MOLE AND EQUIVALENT CONCEPT

    P BAHADUR|Exercise Exercise (3A) Objective problems:|122 Videos

  • IONIC EQUILIBRIUM

    P BAHADUR|Exercise Exercise|85 Videos

  • RADIO ACTIVITY

    P BAHADUR|Exercise Exercies 9|99 Videos

Similar Questions

Explore conceptually related problems

An aqueous solution of sodium chloride is marked 10% (w/w) on the bottle. The density of the solution is "1.071 g mL"^(-1) . What is the molality and molarity? Also what is the mole fraction of each component in the solution?

An aqueous solution of NaCI is marked 10% W/W on the borrle. The density of soution is 1.071 g mL^(-1) . Calculate its molarity.

Knowledge Check

  • What is the mole fraction of glucose in 10% w/W glucose solution ?

    A
    0.01
    B
    0.02
    C
    0.03
    D
    0.04

  • What is the mole fraction of the solute in a 1.0 m aqueous solution ?

    A
    `1.770`
    B
    `0.0354`
    C
    `0.0177`
    D
    `0.177`

    • Similar Questions

    Explore conceptually related problems

    What is the mole fraction of a solute, in 2.5 m aqueous solution ?

    What is the mole fraction of a solute in 2.5 m aqueous solution ?

    What is the mole fraction of glucose in 10% w/w glucose solution?

    Aqueous solution of NaOH is marked 10% (w//w) . The density of the solution is 1.070 g cm^(-3) . Calculate (i) molarity and (ii) molality of NaOH.

    What is the mole fraction of the solute in 2.5 m aqueous solution?

    A solution of glucose in water is labelled as 10% (w/W). The density of the solution is 1.20 g mL^(-1) Calculate (i) molality (ii) molarity and (iii) mole fraction of each component in solution.

    Home
    Profile