The solubility of `[Co(NH)_(3))_(4)Cl_(4)]CIO_(4)`____if the `lambda_(Co(NH_(3))_(4)Cl_(2)^(+)=50, lambda_(ClO_(4)^(-)=70` and the measured resistance
The solubility of `[Co(NH)_(3))_(4)Cl_(4)]CIO_(4)`____if the `lambda_(Co(NH_(3))_(4)Cl_(2)^(+)=50, lambda_(ClO_(4)^(-)=70` and the measured resistance was `35.5 Omega` in a cell with cell constant of 0.20 is ____
A. 59.75 mmol/L
B. 49.75 mmol/L
C. 39.75 mmol/L
D. 29.75 mmol/L
4 views
1 Answers
Correct Answer - B
`lambda_([CO(NH_3)_4Cl_2]ClO_4)^@=lambda_([CO(NH_3)_4Cl_2^(-)])^@ .^(+lambda^@)[ClO_4^(-)]=50+70=120`
`lambda_([CO(NH_3)_4Cl_2]ClO_4)=(1000 K)/M`
`K=G sigma`
=1/33.5x0.20
`lambda_([CO(NH_3)_4Cl_2]ClO_4)=120xx(1000xx0.20)/(33.5xxM)`
`M=(1000xx0.20)/(33.5xx120)=49.75` mmol/L
4 views
Answered