The elevation of boiling point of 0.10 m aqueous solution is two times that of 0.05 m aqueous solution. The value of x is

[Assume 100% ionisation of the complex and , coordination number of Cr as

Question

The elevation of boiling point of 0.10 m aqueous  solution is two times that of 0.05 m aqueous  solution. The value of x is

[Assume 100% ionisation of the complex and , coordination number of Cr as 6, and that all  molecules are present inside the coordination sphere]

Canvas Classes · Accepted Answer

Strategy:
 Relate the boiling point elevations using the proportionality of particle concentrations. Determine the van't Hoff factor for the complex, and then use coordination number rules to solve for .

Step 1: Calculate elevation for 
.

Step 2: Determine elevation and  for the complex
- 
-

Step 3: Determine the formula based on dissociation
 implies that 1 mole of complex produces 3 ions.
The coordination number is 6, and all nh3 molecules are ligands.
Formula: .
Total ions = .

Formula

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