Saved Bookmarks
| 1. |
The pyknometric density of sodium chloride crystal is 2.165times10^(3)kg"" m^(-3)while its X-ray density is 2.178times10^(3)kg"" m^(-3). The fraction of unoccupiedsites in sodium chloride crystal is |
|
Answer» `5.96times10^(-3)` `=2.165 times10^(3)KG"" m^(-3)` X-ray density = Calculated density =`2.178 times10^(3) kg"" m^(-3)` DECREASE indensity `=(2.178times10^(3)-2.165times10^(3))kg"" m^(-3)` =`(0.013 times10^(3))kg"" m^(-3)=13kg"" m^(-3)` Fraction of unoccupied sites =`("Decrease in density")/("Calculated density")` =`(13kg"" m^(-3))/(2.178times10^(3)kg"" m^(-3))=5.96times10^(-3)` |
|