1.

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/LB. 49.75 mmol/LC. 39.75 mmol/LD. 29.75 mmol/L

Answer» 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


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