On the basis of the following observations made with aqueous solutions. assign secondary valences to metals in the following compounds :
Formula Moles of AgCl precipitated per mole of the compounds with excess AgNO,
$(i) P d C l_{2} .4 N H_{3}$ 2
$(i i) N i C l_{2} .6 H_{2} O$ 2
$(i i i) P t C l_{4} .2 H C l$ 0
$(i v) C o C l_{3} .4 N H_{3}$ 1
$(v) P t C l_{2} .2 N H_{3}$ 0

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Solution

(i) Secondary 4 (ii) Secondary 6 (iii) Secondary 6 (iv) Secondary 6 (v) Secondary 4

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Q. On the basis of the following observations made with aqueous solutions, assign secondary valences to metals in the following compounds:

Formula	Moles of $A g C l$ precipitated per mole of the compounds with excess $A g N O_{3}$
(i) $P d C l_{2} .4 N H_{3}$	$2$
(ii) $N i C l_{2} .6 H_{2} O$	$2$
(iii) $P t C l_{4} .2 H C l$	$0$
(iv) $C o C l_{3} .4 N H_{3}$	$1$
(v) $P t C l_{2} .2 N H_{3}$	$0$

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?

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.

Q. A compound has the empirical formula

C o C l_{3} .5 N H_{3}

. When an aqueous solution of this compound is mixed with excess of silver nitrate, 2 moles of

A g C l

precipitate out per mole of compound. On reaction with excess of HCl, no

N H_{4}^{+}

is detected. Hence, the compound is :

1 mole of amino cobalt chloride on treating with an excess of $A g N O$ $_{3}$ solution gives $2$ moles of $A g C l$ precipitate. The number of $C l^{-}$ ions which satisfies both primary and secondary valency of cobalt in the complex is:

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On the basis of the following observations made with aqueous solutions. assign secondary valences to metals in the following compounds :Formula Moles of AgCl precipitated per mole of the compounds with excess AgNO,(i)PdCl2.4NH3 2(ii)NiCl2.6H2O 2(iii)PtCl4.2HCl 0(iv)CoCl3.4NH3 1(v)PtCl2.2NH3 0

(i) Secondary 4 (ii) Secondary 6 (iii) Secondary 6 (iv) Secondary 6 (v) Secondary 4