Ch 2 Chemistry Class 12
Important Easy Notes of Ch 2 Chemistry Class 12 written by Professor Mr. Zaheer Ikram Suib. These notes are very helpful in the preparation of Chemistry for students of the 12th class and these are according to the paper patterns of all Sindh Book Boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
- Transition Elements and Outer Transition Elements.
- General Features of Outer Transition elements.
- Definition of Catalytic Activity and Magnetic Behavior.
- Definition of Co-ordination Number
- General rules of IUPAC naming of coordination compounds
- Roastin of Concentrated Ore and Smelting of Roasted Pyrite Ore
- Bessemerization of Matte and Electrolytic Refining of Blister Copper
- Chemistry of Potassium dichromate and Chemistry of Potassium Permanganate
- Solved Multiple Choice Questions (MCQ's) of the Ch 2 Chemistry Class 12 Sindh Book Boards.
- Why do transition elements show variable Oxidation State?
- Why transition elements have ability to form alloys?
- Why Cu^+2 ion is blue but Zn^+2 is colourless?
- Why chromium exists in 4s^1 3d^5 configuration but not in 4s^2 3d^4?
- Why binding energy of a zinc is least in 3d series?
- Write down the balanced chemical equations for the following reactions.
- (i) Reaction of conc. nitric acid with copper
- (ii) Reaction of conc. sulphuric acid with copper
- (iii) Reaction of permanganate with oxalic acid
- (iv) Reaction of dichromate with ferrous sulphate
- (v) Reaction of manganese with dilute sulphuric acid
- (vi) Reaction of iron with chlorine
- Why d-block elements are called outer transition elements?
- Write down the effect of pH changes on dichromate equilibrium in water.
- Melting point of d-block elements increase up to middle of the series and then decrease why?
- Give the composition and applications of stainless steel, brass and bronze.
- Explain the trend of following properties of 3d-series of transition elements.
- (a) Paramagnetic behavior
- (b) Variable oxidation state
- (c) Colour formation.
- How can you define a coordination complex and a chelating ligand? Explain various types of ligands with examples.
- Describe how 99.99% pure copper is obtained from its chalcopyrite ore.
- Explain why transition elements and their compounds serve as catalysts in many chemical reactions.
- What is meant by binding energy? Write down the trend of binding energy in 3d series of transition elements.
- Definition of Binding Energy.