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Coordination Compounds · Question 48

NEET 2013MCQMedium📈 Topic in 25% papers+4−1
1

An excess of AgNO3 is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium(III) chloride. The number of moles of AgCl precipitated would be

  1. 0.003
  2. 0.01
  3. 0.001
  4. 0.002

Answer

(3) 0.001

Solution

Dichlorotetraaquachromium(III) chloride is [Cr(H2O)4Cl2]Cl.

Only the chloride outside the coordination sphere (ionisable) is precipitated by AgNO3:

[Cr(H2O)4Cl2]Cl + AgNO3 [Cr(H2O)4Cl2]NO3 + AgCl

Moles of complex = 0.01 0.100 = 0.001 mol

∴ Moles of AgCl = 1 0.001 = 0.001

Answer: (3)

NEET 2013

Keep practising — Coordination Compounds

2

Crystal field splitting energy for high spin d4 octahedral complex is

  1. -1.2 o
  2. -0.6 o
  3. -0.8 o
  4. -1.6 o
NEET 2013 (Karnataka)
3

In a particular isomer of [Co(NH3)4Cl2]+, the Cl-Co-Cl angle is 90 , this isomer is known as

  1. optical isomer
  2. cis-isomer
  3. position isomer
  4. linkage isomer.
NEET 2013 (Karnataka)
4

The anion of acetylacetone (acac) forms Co (acac)3 chelate with Co3+. The rings of the chelate are

  1. five membered
  2. four membered
  3. six membered
  4. three membered.
NEET 2013 (Karnataka)
5

The correct IUPAC name for [CrF2(en)2]Cl is

  1. chloro difluorido ethylene diaminechromium (III) chloride
  2. difluoridobis (ethylene diamine) chromium (III) chloride
  3. difluorobis-(ethylene diamine) chromium (III) chloride
  4. chloro difluoridobis (ethylene diamine) chromium (III)
NEET 2013 (Karnataka)
6

Which among the following is a paramagnetic complex?

  1. [Co(NH3)6]3+
  2. [Pt(en)Cl2]
  3. [CoBr4]2-
  4. Mo(CO)6
NEET 2013 (Karnataka)
7

Which is diamagnetic?

  1. [Co(F)6]3-
  2. [Ni(CN)4]2-
  3. [NiCl4]2-
  4. [Fe(CN)6]3-
NEET 2013 (Karnataka)
8

Low spin complex of d6-cation in an octahedral field will have the following energy

  1. -125 o + P
  2. -125 o + 3P
  3. -25 o + 2P
  4. -25 o + P
AIPMT 2012 (Mains)
9

Red precipitate is obtained when ethanol solution of dimethylglyoxime is added to ammoniacal Ni(II). Which of the following statements is not true? [figure]

  1. Red complex has a square planar geometry.
  2. Complex has symmetrical H-bonding.
  3. Red complex has a tetrahedral geometry.
  4. Dimethylglyoxime functions as bidentate ligand.
AIPMT 2012 (Mains)
10

Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?

  1. [Ni(NH3)6]2+
  2. [Zn(NH3)6]2+
  3. [Cr(NH3)6]3+
  4. [Co(NH3)6]3+
AIPMT 2012 (Prelims)
11

Which of the following carbonyls will have the strongest C–O bond?

  1. Cr(CO)6
  2. Fe(CO)5
  3. [Mn(CO)6]+
  4. [V(CO)6]-
AIPMT 2011 (Mains)

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