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Question

The total number of ions produced from the complex $[Cr(NH_3)_6]Cl_3$ in aqueous solution will be____________.

The correct answer is
4

Dissociation of $[Cr(NH_3)_6]Cl_3$ Complex

When the coordination complex $[Cr(NH_3)_6]Cl_3$ is dissolved in an aqueous solution, it dissociates into ions based on its ionic structure.

The complex consists of a complex cation, $[Cr(NH_3)_6]^{3+}$, and three chloride anions, $Cl^-$.

The dissociation reaction in water can be represented as:

$ [Cr(NH_3)_6]Cl_3 \xrightarrow{H_2O} [Cr(NH_3)_6]^{3+} + 3Cl^- $

Calculating Total Ions Produced

By examining the dissociation equation, we can count the total number of ions formed:

  • One complex cation: $[Cr(NH_3)_6]^{3+}$
  • Three chloride anions: $3 \times Cl^-$

The total number of ions is the sum of the cation and the anions:

Total ions = (Number of complex cations) + (Number of chloride anions)

Total ions = 1 + 3 = 4

Therefore, a total of 4 ions are produced from the complex $[Cr(NH_3)_6]Cl_3$ in an aqueous solution.

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Important Questions from Coordination Compounds

  1. Which soft metal in group 1 of the periodic table tarnishes within a few seconds of exposure to air?

  2. Which of the following compound is paramagnetic?

  3. The chemical formula of sodium nitroprusside is

  4. Catalyst used in Haber-Bosch process for making NH3 is __________.

  5. The red color of oxy-haemoglobin is mainly due to ________.

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