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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 total number of orbitals in an energy level designated by principal quantum number n is equal to: (1) 2n (2) 2n 2 (3) n
There are numerous methods for shielding metals from corrosion (iron from rusting). Some of these methods are being discussed as follows: 1. Barrier protection; in this me
Q. Explain about beta radiation? The second common kind of radiation is beta radiation which consists of high-energy electrons called beta particles (β -particles).
Sublimation - Purification of organic compounds Specific organic solids on heating directly change from solid to vapour state without passing via a liquid state, such types of
how to determine the percentage of association or dissociation in a solution?
solution A is made by dissolving sodium acetate in methanol. so
#question.all questions under lanthanides and actinides.
Neoprene (GR: or Polychloroprene or Dupe) Preparation: Neoprene is prepared by the free radical polymerisation of chloroprene in an emulsion system. Starting materials are ac
Hi I need ur help Thank you CuCo3+2HCl=CuCl2+CO3+H2O What mass of cucl2 with react completely with 20 cm3 of 2000 mol cm3 of HCl? Calculate the % yield if 8.5g of chloride was pro
Ortho, meta and para 1. Ortho (or 1, 2-) : if the two substituents are on the adjacent carbon atoms, the compound is said to be ortho (or 1, 2-). 2. Meta (or 1, 3-) : if the
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