1. Tardigrade
  2. Question
  3. Chemistry
  4. Addition of excess aqueous ammonia to a pink coloured aqueous solution of MCl2.6H2O(X) and NH4Cl gives an octahedral complex Y in the presence of air. In aqueous solution, complex Y behaves as 1:3 electrolyte. The reaction of X with excess HCl at room temperature results in the formation of a blue coloured complex Z. The calculated spin only magnetic moment of X and Z is 3.87 B.M., whereas it is zero for complex Y. Among the following options, which statement is incorrect?

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Q. Addition of excess aqueous ammonia to a pink coloured aqueous solution of $MCl_{2}.6H_{2}O\left(X\right)$ and $NH_{4}Cl$ gives an octahedral complex Y in the presence of air. In aqueous solution, complex Y behaves as 1:3 electrolyte. The reaction of X with excess HCl at room temperature results in the formation of a blue coloured complex Z. The calculated spin only magnetic moment of X and Z is 3.87 B.M., whereas it is zero for complex Y.

Among the following options, which statement is incorrect?

NTA AbhyasNTA Abhyas 2020Coordination Compounds

Solution:

Solution

X and Z are in equilibrium at $0^{o}C$ , equilibrium is shifted towards X, making colour of solution pink.