SATHEE: Coordination Compounds 2 Question 28

Coordination Compounds 2 Question 28

####30. The equation which is balanced and represents the correct product(s) is

(2014 Main)

(a) $L i_{2} O + 2 K C l ⟶ 2 L i C l + K_{2} O$

(b) ${[C o C l {(N H_{3})}_{5}]}^{+} + 5 H^{+} ⟶ C o^{2 +} + 5 N H_{4}^{+} + C l^{-}$

$[M g (EDTA)]^{2 +} + 6 H_{2} O$

(d) $C u S O_{4} + 4 K C N ⟶ K_{2} [C u (C N)_{4}] + K_{2} S O_{4}$

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Answer:

Correct Answer: 30. (c)

Solution:

This problem is based on conceptual mixing of properties of lithium oxide and preparation, properties of coordination compounds. To answer this question, keep in mind that on adding acid, ammine complexes get destroyed.

(a) $L i_{2} O + K C l ⟶ 2 L i C l + K_{2} O$

This is wrong equation, since a stronger base $K_{2} O$ cannot be generated by a weaker base $L i_{2} O$ .

(b) ${[C o C l {(N H_{3})}_{5}]}^{+} + 5 H^{+} ⟶ C o^{2 +} (a q) + 5 N H_{4}^{+} + C l^{-}$

This is correct. All ammine complexes can be destroyed by adding $H^{\oplus}$ . Hence, on adding acid to $[C o C l {(N H_{3})}_{5}]$ , it gets converted to $C o^{2 +} (a q)^{+} N H_{4}^{+}$ and $C l^{-}$ .

This is wrong, since the formula of complex must be $[Mg (EDTA)]^{2 +}$ as EDT.

(d) The 4th reaction is incorrect. It can be correctly represented as

$\begin{aligned} 2 C u S O_{4} + 10 K C N ⟶ 2 & K_{3} [C u (C N)_{4}] & + 2 K_{2} S O_{4} + (C N)_{2} ↑ \end{aligned}$

Coordination Compounds 2 Question 28

Answer:

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Coordination Compounds 2 Question 28

Answer:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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