A coordination compound of cobalt has the empirical formula . One mole of this compound produces moles of ions in an aqueous solution. Based on Werner's theory, how many chloride ions are present insi

Question

A coordination compound of cobalt has the empirical formula $CoCl_3 \cdot 5NH_3$. One mole of this compound produces $3$ moles of ions in an aqueous solution. Based on Werner's theory, how many chloride ions are present inside the coordination sphere?

Prashant Kotian · Accepted Answer

Correct answer: 1. If 1 mole of the complex yields 3 moles of ions, it must ionise into 1 complex cation and 2 chloride anions. Thus, ions are outside the coordination sphere. Since the empirical formula contains atoms, exactly must be present inside the coordination sphere, giving the formula .

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