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Entropy (S) is a molecular 'disorder', or more precisely 'the number of microscopic arrangements of energy possible in a macroscopic sample'. Entropy depends strongly on the state and increases with rise in temperature.
Entropy changes (ΔS) are positive for reactions that generate gas molecules. The Second Law of Thermodynamics defines that the total entropy always increases in a spontaneous process, and reaches a maximum value at equilibrium. To apply this to chemical reactions it is necessary to include entropy changes in the surroundings caused by heat output or input. Both external and internal changes are taken account of by defining the Gibbs free energy change (ΔG): for a reaction performing at constant temperature.
what is an atom
For azimuthal quantum number l= 3 , the maximum number of electrons will be: (1) 2 (2) 6 (3) 0 (4) 14 Ans: 14
Cu 2+ will have the following electronic configuration: (1) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 3d 10 , (2) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 9 , 4s 1 (3) 1s 2 , 2s 2 ,
Q Explain Working of Galvanic Cell? Ans. There are several types of electrochemical cells. One type of electrochemical cell is called a galvanic cell . (A battery is a galvan
color formation of d-block elements
why in f-block element electronic configuration electrons does not enter in 5d orbital (except for La,Gd,Lu)
how can you explain the fact that lanthinides are highly electopositive?
ionic equation for potassium dichromate and potassium manganate
Fe+ AgNO3-->Fe(NO3)2 + Ag
Question: (i) Differentiate between ionic, metallic, covalent and dipole-dipole bonds. Provide examples in each case. (ii) With regard to electronic con?guration, what do a
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