Home
Class 11
CHEMISTRY
A 1000 gram sample of NaOH contains 3 mo...

A 1000 gram sample of `NaOH` contains 3 mole of `O` atoms, what is the `%` purity of `NaOH` :

A

`14%`

B

`100%`

C

`12%`

D

`24%`

Text Solution

Verified by Experts

The correct Answer is:
C
`NaOH` contain 3 mole of `O` atoms
so mole of `NaOH = 3 mol`
wt of `NaOH = 3 xx 40 = 120g`
`%` purity `= (120)/(1000) xx 100 = 12%` .
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MOLE CONCEPT

    ALLEN|Exercise EXERCISE - 02|46 Videos

  • MOLE CONCEPT

    ALLEN|Exercise EXERCISE -03|13 Videos

  • MOLE CONCEPT

    ALLEN|Exercise Exercise - 05(B)|8 Videos

  • IUPAC NOMENCLATURE

    ALLEN|Exercise Exercise - 05(B)|7 Videos

  • QUANTUM NUMBER & PERIODIC TABLE

    ALLEN|Exercise J-ADVANCED EXERCISE|24 Videos

Similar Questions

Explore conceptually related problems

4.0 g of NaOH contains

A pure sample of CaCO_(3) contain 100 moles of total atoms. What is the mass of sample-

A sample of MgSO_(4) contains 8 xx 10^(20) 'O' atoms what is the mass of 'S' in the sample ?

One mole of H_3PO_3 on reaction with excess of NaOH gives :

15 gm Ba(MnO_4)_2 sample containing inert impurity is completely reacting with 100 ml of 11.2 V' H_2O_2 , then what will be the % purity of Ba(MnO_4)_2 in the sample ? (Atomic mass Ba=137, Mn=55)

A sample of impure cuprous oxide contains 66.67% copper, by ,mass. What is the percentage of pure Cu_2 O in the sample? (Cu=63.5)

To 1 L of 1.0 M impure H_(2)SO_(4) sample, 1.0 M NaOH solution was added and a plot was obtained as follows: The % purity of H_(2) SO_(4) and the slope of curve, respectively, are:

A solution of NaOH contains 0.04g of NaOH per litre. Its pH is:

An impure sample of CaCO_(3) contains 38% of Ca. The percentage of impurity present in the sample is :

What is the number of moles of O-atoms in 126 amu of HNO_3 ?

Home
Profile