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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.
general principal for extraction of metals
Q. Illustrate the physical property of matter? A physical property of a substance is a quality that can be observed and measured without changing the composition of the subst
which one is more stable cis or trans
In which one of the following pairs of experimental observations and phenomenon does the experimental observation correctly account for phenomenon: (1) X-ray spectra
Which species contain unpaired electron? BaO 2 here oxidation number of Ba is +1 Ba(+) has 1 electron in its outermost shell so its unpaired in KO 2 . .oxd state of K is +
I WHAT TO KNOW THE VARIOUS TYPES OF AMPEROMETRY
What is meant by linear combination of atomic orbitals? State bonding and antibonding molecular orbitals based on bomo-nuclear dihydrogen molecule.
The process of chromatography involves passing a mixture dissolved in the "mobile phase" through a stationary phase, which separates the analyte which is to be measured from the ot
i need to know the answer for dis-advantage of scale and sludge
Compare the combustion energy stored in a 1 litre bottle of propane and butane. Suppose that the product temperature is 100°C. The density of liquid propane is 0.493 g cm -3
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