Q8 of 40 Page 1

When a co-ordination compound is mixed with moles of are precipitated per mole of the compound. Write

A. Structural formula of the complex.


B. IUPAC name of the complex.

Since the number of moles of AgCl that is obtained are 2, there would be two Cl- ions satisfying the primary valencies, while there is presence of one Cl- ion and five H2O molecules inside the coordination sphere, resulting in a coordination sphere of 6, and one molecule of H2O being present as the molecule of hydration.

Structural Formula: [CrCl(H2O)5]Cl2.H2O


IUPAC name of the compound is Pentaaquachloridochromium(lll) chloride.


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7

When chromite ore is fused with NaOH in presence of air, a yellow coloured compound (A) is obtained which on acidification with dilute sulphuric acid gives a compound (B). Compound (B) on reaction with KCl forms a orange coloured crystalline compound (C).

A. Write the formulae of the compounds (A), (B) and (C)


B. Write one use of compound (C).

 7

Complete the following chemical equations:

A.


B.

9

For a reaction:


Rate = k


A. Write the order and molecularity of this reaction.


B. Write the unit of k.

 10

Write the mechanism of the following reaction: