JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
\(5.33\) g of \(CrCl_3 \cdot 6H_2O\), which is a \(1 : 3\) electrolyte, is dissolved in water and is passed through a cation exchanger. The chloride ions in the eluted solution, on treatment with \(AgNO_3\) results in \(8.61\) g of \(AgCl\). The ratio of moles of complex reacted and moles of \(AgCl\) formed is _______ \(\times 10^{-2}\). (Nearest integer)
[Molar mass in g mol\(^{-1}\) Cr : \(52\), Ag : \(108\), Cl : \(35.5\), H : \(1\), O : \(16\)]
- A 11
- B 44
- C 22
- D 33
Answer & Solution
Correct Answer
(D) 33
Step-by-step Solution
Detailed explanation
Molar mass of \(CrCl_3 \cdot 6H_2O = 52 + 3 \times 35.5 + 6 \times 18 = 266.5 \text{ g mol}^{-1}\) Moles of complex reacted \(= \dfrac{5.33}{266.5} = 0.02 \text{ mol}\) Since the complex is a \(1:3\) electrolyte, it dissociates to give one complex cation and three chloride…
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