Question
Explain the relationship between $\Delta G$ and $E _{\text {cell }}^{\circ}$ with the help of an example.

Answer

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Write balanced equations to represent what happens when.
  1. Cu2+ is treated with KI.
  2. Acidified potassium dichromate solution is reacted with iron (II) solution. (ionic equation).
Explain the various uses of lanthanoids.
Explain the limitations of valence bound theory.
  1. Account for the following:
    1. Mn shows the highest oxidation state of +7 with oxygen but with fluorine it shows the highest oxidation state of +4.
    2. Cr2+ is a strong reducing agent.
    3. Cu2+ salts are coloured while Zn2+ salts are white.
  2. Complete the following equations:
    1. $2\text{MnO}_{2} + 4\text{KOH} + \text{O}_{2} \xrightarrow{\Delta}$
    2. $\text{Cr}_{2}\text{O}^{2-}_{7}+ 14\text{H}^{+} + 6\text{I}^{-}\xrightarrow{}$
How will you distinguish $1^{\circ}, 2^{\circ}$ and $3^{\circ}$ alcohols by Victor Mayer Test? Explain.
  1. Why do transition elements show variable oxidation states?
  1. Name the element showing maximum number of oxidation states among the first series of transition metals form Sc (Z=21) to Zn (Z=30).
  2. Name the element which shows only +3 oxidation state.
  1. What is lanthanoid contraction? Name an important alloy which contains some of the lanthanoid metals.
Match the terms given in Column I with the units given in Column II.

 
Column I

 

Column II

i.

$\wedge_{\text{m}}$

a.

Intensive property.

ii.

$\text{E}^{\ominus}_{\text{Cell}}$

b.

Depends on number of ions/volume.

iii.

$\text{K}$

c.

Extensive property.

iv.

$\Delta_{\text{r}}\text{G}_{\text{Cell}}$

d.

Increases with dilution.

Classify carbohydrates and also give examples of each.
Using crystal field theory, draw energy level diagram, write electronic configuration of the central metal atom/ion and determine the magnetic moment value in the following:
  1. $[\text{CoF}_6]^{3-}, [\text{Co(H}_2\text{O})_6]^{2+}, [\text{Co(CN)}_6]^{3-}$
  2. $[\text{FeF}_6]^{3-}, [\text{Fe(H}_2\text{O})_6]^{2+}, [\text{Fe(CN})_6]^{4-}$
How would you distinguish among primary, secondary and tertiary alcohols?