You visited us 1 times! Enjoying our articles? Unlock Full Access!

Types of Solution

CoCl 3 .3NH 3...

Question

$C o C l_{3} .3 N H_{3}$ does not form any precipitate with excess ${A g N O}_{3}$ solution, whereas 1 mole of $C o C l_{3} .5 N H_{3}$ gives two moles of $A g C l$ with excess ${A g N O}_{3}$ . The van't Hoff factor for both the compounds respectively are:

0 and 2

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0 and 3

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1 and 3

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

1 and 2

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 1 and 3
To give ppt with ${A g N O}_{3}$ solution, a substance has to release ${C l}^{-}$ ions.
$C o C l_{3} .3 N H_{3}$ gives no ppt because it does not dissociate in solution.
$∴$ Number of particles in solution $= 1$ i.e the molecule itself $C o C l_{3} .5 N H_{3}$ gives 2 moles $A g C l$ ppt because it dissociate as follows
$C o C l_{3} .5 N H_{3} \to {[C o {({N H}_{3})}_{5} C l]}_{5}^{2 +} + 2 {C l}^{-}$
It gives 3 ions on dissociation.
$∴$ its van't Hoff factor is 3.

Suggest Corrections

Similar questions

Q. In aqueous solution 1 mole of

C o C l_{3} .4 N H_{3}

gives 1 mole of AgCl precipitate with excess

A g N O_{3}

, then what is the secondary valency of metal?

Two different compounds of

C r (I I I)

have the same empirical formula,

C r C l_{3} \cdot 6 H_{2} O

one

(A)

is green and the other

(B)

is violet.

(A)

on reaction with excess

A g N O_{3}

gives

1

mole of

A g C l

per mol of

(A)

while

(B)

on reaction with excess

A g N O_{3}

gives

3

moles

A g C l

per mol of

(B)

. Comment on Conductance of

A

and

B

Q. Given that 1 moles of

N i C l_{2} .6 H_{2} O

with excess

A g N O_{3}

precipitate 2 moles of

A g C l

, what is the coordination number of

N i

Q. If

P t

P t C l_{4} .2 H C l

has a coordination number of 6, how many moles of

A g C l

will 1 mole of the compound precipitate with excess

A g N O_{3}

Q. Assertion :Aqueous solution of the compound

C o C l_{3} .4 N H_{3}

when treated with excess of

A g N O_{3}

, 1 mole of

A g C l

is precipitated. Reason: The compound

C o C l_{3} .4 N H_{3}

has six primary valencies and one secondary valency.

Join BYJU'S Learning Program

CoCl3.3NH3 does not form any precipitate with excess AgNO3 solution, whereas 1 mole of CoCl3.5NH3 gives two moles of AgCl with excess AgNO3. The van't Hoff factor for both the compounds respectively are:

$C o C l_{3} .3 N H_{3}$ does not form any precipitate with excess ${A g N O}_{3}$ solution, whereas 1 mole of $C o C l_{3} .5 N H_{3}$ gives two moles of $A g C l$ with excess ${A g N O}_{3}$ . The van't Hoff factor for both the compounds respectively are: