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AgCl has the same structure as that of NaOH. The edge length is unit cell of AgCl is found to be 555pm and density is 5.561g/cm3. Find the percentage of sites that are unoccupied.

Asked by Umesh 18th March 2018, 7:01 PM
Answered by Expert
Answer:
open parentheses rho close parentheses space subscript A g C l comma e x p e c t e d space end subscript equals fraction numerator 4 space M subscript A g to the power of plus end subscript plus space 4 space M subscript C l to the power of minus end subscript over denominator a cubed open parentheses N subscript A close parentheses end fraction

space space space space space space space space space space space space space space space space space space space space space space equals fraction numerator 4 space cross times left parenthesis 107.87 plus 35.45 right parenthesis over denominator left parenthesis 555 cross times 10 to the power of negative 10 end exponent right parenthesis cubed space left parenthesis 6.023 cross times 10 to the power of 23 right parenthesis end fraction space g space c m to the power of negative 3 end exponent

space space space space space space space space space space space space space space space space space space space space space space space equals space 5.574 space g space c m to the power of negative 3 end exponent

G i v e n comma space open parentheses rho close parentheses subscript A g C l comma o b s e r v e d space end subscript space equals 5.561 space g space c m to the power of negative 3 end exponent

T h e r e f o r e comma space percent sign space o f space s i t e s space t h a t space a r e space u n o c c u p i e d space

space space space space space space space space space space space space space space space equals space fraction numerator 5.574 space minus 5.561 right parenthesis over denominator left parenthesis 5.574 right parenthesis end fraction cross times space 100

space space space space space space space space space space space space space space space space equals space 0.24 space percent sign
Answered by Expert 19th March 2018, 1:09 PM
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