Home
Class 11
CHEMISTRY
The pyknometric density of sodium chlori...

The pyknometric density of sodium chloride crystal is `2.165xx10^(3)kg m^(-3)` while its `X` ray density is `2.178xx10^(3)kg m^(-3)` the fraction of unoccupied sites in `NaCl` crystal is

A

5.96

B

`5.96 xx 10^(-2)`

C

`5.96 xx 10^(-1)`

D

` 5.96 xx 10^(-3)`

Text Solution

Verified by Experts

Molar volume from pyknometric density
` = M/(2.165 xx 10^(3)) m^(3)`
Molar volume from X-ray density
` M/(2.178 xx 10^(3)) m^(3)`
Volume unoccpied
`M/10^(3) ( 1/(2.165) - 1/(2.178))m^(3) = (( 0.013 M xx10^(-3))/(2.165 xx 2.178))//((M xx 10^(-3))/2.165) = 5.96 xx 10^(-3)`
Promotional Banner

Topper's Solved these Questions

  • APPENDIX

    PRADEEP|Exercise 6 WHAT HAPPENS WHEN|1 Videos

  • APPENDIX

    PRADEEP|Exercise 7 WHAT HAPPENS WHEN|1 Videos

  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    PRADEEP|Exercise Curiosity Questions|2 Videos

Similar Questions

Explore conceptually related problems

The pyknometric density of NaCl crystal is 2.165 xx 10^(3 kg m^(-3) while its X -ray density is 2.178 xx 10^(-3) kg m^(-3) . The fraction of unoccupied sites in NaCl crystal is a. 5.96 b. 5.96 xx 10^(-2) c. 5.96 xx 10^(-1) d. 5.96 xx 10^(-3)

If the density of copper is 8.9xx10^(3)kg//m^(3) , find its relative density.

The order of magnitude of the density of nuclear matter is 10^(4) kg m^(-3)

For aluminium , the modulus of rigidity is 2.1xx10^(10)Nm^(-2 and density is 2.7xx10^(3)kg//m^(3) .Find the speed of transverse waves in the medium.