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Explain the following observations:
(i) Generally there is an increase in density of elements from titanium (Z = 22) to copper (z =29) in the first series of transition elements.
(ii) Transition elements and their compounds are generally found to be good catalysts in chemical reactions.
Which compound is highest covalent: (1) LiCl (2) FiF (3) LiBr (4) LiI Ans: LiI
The energy of second Bohr orbit of the hydrogen atom is -328 kJ mol-1, hence the energy of fourth Bohr orbit would be: (1) - 41 kJ mol -1 (2) -1312 kJ mol -1 (3) -164
what are the classification of colloids ?
Q. Explain Molarity and Replacement Reactions? Ans. Frequently in the chemistry lab we are confronted with situations where we are interested in the yield of a certain rea
which solution is formed when iodine solution ,copper sulphate and caustic soda are mixed?
Complexes
You make up 0.100 L of a buffer having 1.00 M acetic acid and 1.10 M sodium acetate. The Ka of acetic acid is 1.8 x 10-4. (a) Determine the pH of this buffer.
basic principle of electrogravimetry
solvent rates on the rate of reaction
synthesis and uses of DDT and BHC
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