For compounds, [Cr(H2O)6]Cl3 ; [Cr(H2O)5Cl]Cl2.H2O& [Cr(H2O)5Cl2]Cl.2H2O answer the following questions: - A....

For compounds,

[Cr(H₂O)₆]Cl₃ ; [Cr(H₂O)₅Cl]Cl₂^.H₂O& [Cr(H₂O)₅Cl₂]Cl^.2H₂O

answer the following questions:

- A. B. C. D.	Does not lose water on H₂SO₄
- A. B. C. D.	Loses one H₂O on H₂SO₄
- A. B. C. D.	Loses two H₂O on H₂SO₄
- A. B. C. D.	Loses three H₂O on H₂SO₄
- A. B. C. D.	Loses all six H₂O on H₂SO₄
- A. B. C. D.	Does not immediately precipitate any Cl^-by Ag⁺
- A. B. C. D.	Immediately precipitates one Cl^- by Ag⁺
- A. B. C. D.	Immediately precipitates two Cl^- by Ag⁺
- A. B. C. D.	Immediately precipitates all three Cl^- by Ag⁺

A.	[Cr(H₂O)₆]Cl₃
B.	[Cr(H₂O)₅Cl]Cl₂^.H₂O
C.	[Cr(H₂O)₅Cl₂]Cl^.2H₂O
D.	None of them

Expert Solution

- A. B. C. D.	Does not lose water on H₂SO₄
- A. B. C. D.	Loses one H₂O on H₂SO₄
- A. B. C. D.	Loses two H₂O on H₂SO₄
- A. B. C. D.	Loses three H₂O on H₂SO₄
- A. B. C. D.	Loses all six H₂O on H₂SO₄
- A. B. C. D.	Does not immediately precipitate any Cl^-by Ag⁺
- A. B. C. D.	Immediately precipitates one Cl^- by Ag⁺
- A. B. C. D.	Immediately precipitates two Cl^- by Ag⁺
- A. B. C. D.	Immediately precipitates all three Cl^- by Ag⁺

A.	[Cr(H₂O)₆]Cl₃
B.	[Cr(H₂O)₅Cl]Cl₂^.H₂O
C.	[Cr(H₂O)₅Cl₂]Cl^.2H₂O
D.	None of them

Explanation

The groups which are outside the coordination sphere ( that is square brackets in the structure ) can be ionised . thus the compounds which have Cl- ion outside the square brackts are the primary valency and are ionisable.

Similarly the water molecules out side the coordination sphere are easily removed(dehydrated ) by H2SO4 . They are just water of hydration/crystallization.

However the H2O or Cl inside the square brackets(coordination sphere) are satisfying the secondary valency and can not be removed/ionised.

queen_honey_blossom answered 2 years ago

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