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Colour and Solubility

The number of...

Question

The number of ions produced in water by dissolution of the complex having the empirical formula, $C o C l_{3} .4 N H_{3}$ , is:

A

1

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B

2

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C

4

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D

3

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Solution

The correct option is B 2
It will produce only two ions on dissolution $C l^{-}$ and $[C o (N H_{3})_{4} C l_{2}]^{+}$
Hence option $B$ is correct.

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Similar questions

Q. One mole of complex compound

C o (N H_{3})_{5} C l_{3}

gives 3 moles of ions in dissolution in water. One mole of the same complex reacts with two moles of

A g N O_{3}

to yield two moles of

A g C l_{(s)}

. The complex is :

Q. The number of ions produced by the complex

[C o {(N H_{3})}_{4} C l_{2}] C l

Q. One mole of a complex compound

C o (N H_{3})_{5} C l_{3}

gives three moles of ions on dissolution in water. One mole of the same complex reacts with two moles of

A g N O_{3}

and yields two moles of

A g C l (s)

. The complex is:

A, B and C are three complexes of chromium (III) with the empirical formula

H_{12} O_{6} C l_{3} C r

. All the three complexes have water and chloride ions as ligands. Complex A does not react with concentrated

H_{2} S O_{4}

, whereas complexes B and C lose 6.75% and 13.5% of their original weight respectively, on treatment with concentrated

H_{2} S O_{4}

.

Thus, select the correct statement :

A, B

C

are three complexes of chromium(III) with the empirical formula:

H_{12} O_{6} C l_{3} C r

. All the three complexes have water and chloride ions as ligands. Complex

A

does not react with concentrated

H_{2} S O_{4}

, whereas complexes

B

C

6.75 %

13.5 %

of their original weight, respectively, on treatment with concentrated

H_{2} S O_{4}

C

[C r (H_{2} O)_{x} C l_{y}] C l \cdot z H_{2} O,

find the x, y and z.

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