Home
Class 12
CHEMISTRY
If NaCl is doped with 10^(-3) mol % of S...

If NaCl is doped with `10^(-3)` mol `%` of `SrCl_(2)`, what is the concentration of cation vacancies?

Text Solution

Verified by Experts

The correct Answer is:
`6.022xx10^(18)`
Due to the addition of strontium chloride `(SrCl_(2))`, each `Sr^(2+)` ion replaces two `Na^(+)` ions but occupies only one lattice point in place of `Na^(+)` ion. This leads to one cation vacancy.
Number of moles of cation vacancies is 100 mol of NaCl = `10^(-3)`
Number of moles of cation vacancies in 1 mol `=(10^(-3))/(100)=10^(-5)mol`
Total number of cation vacancies `=10^(-5)xxN_(0)`
`=(10^(-5)mol)xx(6.022xx10^(23)mol^(-1)`
`=6.022xx10^(18)`
Promotional Banner

Similar Questions

Explore conceptually related problems

If NaCl is doped with 10^(-3) mol% SrCl_(2) , what is the concentration of cation vacancies?

NaCl crystal is doped with 10^(-3)mol% of SrCl_(2) . The concentration of cation vacancies in doped NaCl is-

What is an impurity defect? What kind of impurity defect is generated in a NaCl crystal when it is doped with a small amount of SrCl_(2) ? Calculate the number of cation vacancy per Sr^(2+) ions is this crystal?

What will be the number of cation vacancies if 10^(-3) mol% of CdCl_(2) is added to the crystal of AgCl?

10 g of NaCl is dissolved in 250 g water. The correct expressions for concentration of NaCl in solution are :

A sample of pure PC l_(5) was introduced into an evacuated vessel at 473 K. after equilibrium was attained, concentration of PCl_(5) was found to be 0.5xx10^(-1)mol*L^(-1) , if value of K_(c) is 8.3xx10^(-3) , what are the concentration of PCl_(3) and Cl_(2) at equilibrium?

Bromine monochloride, BrCl decomposes into bromine and chlorine and reaches the equilibrium: 500K. If initially pure BrCl is present at a concentration of 3.3xx10^(-3)mol*L^(-1) , what is its molar concentration in the mixture at equilibrium?

The value of K_(c) for the reaction 3O_(2)(g)hArr 2O_(3)(g) is 2.0xx10^(-50) at 25^(@)C . If the equilibrium concentration of O_(2) in air at 25^(@)C is 1.6xx10^(-2) , what is the concentration of O_(3) ?

A reaction has an overall order of (3)/(2) . What will be unit of its rate constant be if the concentration of the reactant is expressed in '"mol.dm"^(-3)' and time in 'seconds' ?

Consider a certain reaction Ararr products with k=2.0xx10^(-2)s^(-1) .Calculate the concentration of a A remaining after 100s if the initial concentration of A is 1.0"mol .L"^(-1) .