Home
Class 12
CHEMISTRY
One litre hard water contains 12.00 mg M...

One litre hard water contains 12.00 mg `Mg^(2+)` millieqivalent of washing soda required to remove its hardness is

A

1

B

`12.15`

C

`1xx10^(-3)`

D

`12.15xx10^(-3)`

Text Solution

Verified by Experts

The correct Answer is:
A
Meq of `Mg^(+2) equiv` Meq of washing soda
`W/Exx1000=Mg^(+2), EW=24/2=12 implies (12xx10^(-3))/12xx1000=1`.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SOME BASIC CONCEPTS OF CHEMISTRY

    ERRORLESS |Exercise JEE Section (Only one choice correct answer)|47 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    ERRORLESS |Exercise JEE Section (More than one correct answer)|12 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    ERRORLESS |Exercise Ordinary Thinking (Objective Questions) Redox reaction and Method for balancing Redox reaction|21 Videos

  • SOLUTION

    ERRORLESS |Exercise JEE SECTION (JEE (Advanced)2018) (Numeric answer type questions)|3 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS |Exercise JEE section (JEE (Advanced) 2018) Numeric answer type questions|2 Videos

Similar Questions

Explore conceptually related problems

Calculate milli equilvalent of washing soda required to remove its hardness from one litre hard water contains "18.00 mg Mg"^(2+)

One litre of sample of hard water contains 0.8 mg of CaCl_(2) and "0.8 mg of MgCl"_(2) . Find the total hardness in terms of parts of CaCO_(3) , per 10^(6) parts of water by mass.

Knowledge Check

  • One litre hard water contains 12.00 mg Mg^(2+) Milliequivalents of washing soda required to remove its hardness is

    A
    1
    B
    `12.16`
    C
    `1 xx 10^(-3)`
    D
    `12.16 xx 10^(-3)`

  • One litre of a sample of hard water contain 4.44mg CaCl_(2) and 1.9mg "of" MgCl_(2) . What is the total hardness in terms of ppm of CaCO_(3)?

    A
    2ppm
    B
    3ppm
    C
    4ppm
    D
    6ppm

  • A sample of hard water is found to contain 40 mg of Ca^(2+) ions per litre. The amount of washing shoda (Na_(2)CO_(3)) required to soften 5*0 L of the sample would be

    A
    `1*06 g`
    B
    `5*3 g`
    C
    `53 mg`
    D
    `530 mg`

    • Similar Questions

    Explore conceptually related problems

    One litre of a sample of hard water contains 1.62g of calcium hydrogen carbonte. What amount of lime is needed to remove hardness of 10^(6) litres of such a sample

    One litre of a sample of hard water contains 1 mg of CaCl_(2) and 1 mg of MgCl_(2) . Find the total hardness of water in terms of parts of CaCO_(3) per 10^(6) parts of water by mass.

    One litre of a sample of hard water contains 4.44 mg CaCl_2 and 1.9 mg of MgCl_2 .What is the total hardness in terms of ppm of CaCO_3 ?

    One litre sample of water contains 0.9 mg CaCl_(2) and 0.9 mg of MgCl_(2) . Find the total hardness in terms of parts permillion of CaCO_(3) .

    0.00012% MgSO_(4) and 0.000111% CaCl_(2) is present in water. What is the measured hardness of water and millimoles of washing soda required to purigy water 1000 L water ?

    Home
    Profile