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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.
The energy required to dislodge electron from excited isolated H-atom, IE 1 = 13.6 eV is: (1) = 13.6eV (2) > 13.6eV (3) 3.4 eV
Q. Evaluation of milk samples? Milk is one of the most common articles of food throughout the world. It is regarded as a complete food. Why? Simply, because it contains protein
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Soda lime test - Nitrogen A pinch of an organic compound is heated strongly along with soda lime (NaOH + CaO) in a test tube. If ammonia gas acts, it depicts nitrogen.
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Experimental evidence for the existence of the atomic nucleus comes from: (1) Millikan's oil drop experiment (2) Atomic emission spectroscopy (3) The magnetic bending of
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Aromatic Nitro Compounds Aromatic nitro compounds are the derivatives of aromatic hydrocarbons where one or more hydrogen atom (s) of the benzene nucleus has been changed by ni
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