Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Coordination Compounds

Short Answer Type

71. What is Wilkinson’s catalyst? Where is it used?

224 Views

72.

Write the IUPAC name of [Ni(CN)₄]^2– ion?

915 Views

73. Nickel carbonyl( NiCO₄) has tetrahedral geometry whereas [Pt(NH₃)₂Cl₂] is square planar.

360 Views

74.
Write the expression for the stability’ constant for [Cu(NH₃)₄]²⁺.

The equilibrium constant for the formation of the complex ion from the hydrated ion is called the formation constant (K_f). Since [Cu(NH₃)₄]²⁺ is formed as given below:

{Cu}^{2 +} + 4 {NH}_{3} ⇌ {[Cu ({NH}_{3})_{4}]}^{2 +}

.

Thus, Stability constant is

K = \frac{{[Cu ({NH}_{3})_{4}]}^{2 +}}{[{Cu}^{2 +}] {[{NH}_{3}]}^{4}}

159 Views

75.

The value of equilibrium constants of [Cu(NH₃)₄]⁺ and [Co(NH₃)₆]³⁺ are 1.0 x 10^–12 and 6.2 x 10^–36 respectively. Which complex would be more stable and why ?

142 Views

76.

In octahedral complexes which two d-orbitals are used in hybridization.

172 Views

77.

If the value of Δ₀ is less than P in the crystal field, write the arrangement of d⁴coordination entity in crystal field split.

125 Views

78.

How is ammonia molecule is a good ligand?

162 Views

79.

What do you understand by the term stability constant K for a complex?

149 Views

80. There are two compounds [Cr(NH₃)₄]²⁺ and [Cr(CN)₄]^2– having 5.2 x 10¹¹ and 3.2 x 10²² respectively as their K values, which complex is more stable and which ligand NH₃or CN^– is a stronger ligand?

145 Views

Previous Year Papers

Test Series

Test Yourself

Short Answer Type

74. Write the expression for the stability’ constant for [Cu(NH3)4]2+.

74.
Write the expression for the stability’ constant for [Cu(NH₃)₄]²⁺.