Question

The solubility of $\left[ Co \left( NH _{3}\right)_{4} Cl _{2}\right] ClO _{4}$ ____________, if the $\lambda_{ Co \left( NH _{3}\right)_{4} Cl _{2}^{+}}=50, \lambda_{ ClO _{4}{ }^{-}}=70$ and the measured resistance was $33.5 \Omega$ 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) $29.75 mmol / L$

Answer 1

Answer : (B) 49.75 mmol/L