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Osmotic pressure:
Osmosis process is the movement of a solvent from a solution of lower solute concentration (higher solvent concentration) to one of the higher solute concentration (lower solvent concentration). In osmotic pressure measurements a semi-permeable membrane. It is permeable only to solvent (as it have holes that are small enough to prevent large solute molecules passing through) separates two liquids. This means that this technique is used for relatively large molecules, often polymers or biological macromolecules. Typically, one liquid is pure water and the other is the solute solutions of interest. This produces a flow of water from the solvent to the solute solutions. The experimental apparatus (Fig. 1) incorporates one for each liquid, two identical vertical columns, and the height of the liquid in the solution columns increase relative to that in the pure solvent column due to this net flow.
Fig.1. Schematic diagram of the apparatus for measuring osmotic pressure. (a) Apparatus at the start of the measurement; (b) apparatus at equilibrium
Longest chain Rule - IUPAC system of nomenclature The primary step in naming an organic compound is to choose the longest continuous chain of carbon atoms that may or may not
Chromium has the electronic configuration 4s 1 3d 5 rather than4s 2 , 3d 4 because: (1) 4s and 3d have the same energy (2) 4s has a higher energy than 3d (3)4s 1 is
It is a phenomenon in which compounds have same moleculer formula but different structural formula due to which they posses different physical and chemical properties.
Which one has zero oxidation state in s block
In nitromethane N-O bondlength is 1.21A° while normal N-O bondlength is 1.36 A° and for N=O it is 1.18A°..Explain why
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Quantitative analysis - Estimation of Elements After qualitative analysis of elements, the another step in the determination of molecular formula of an organic compound is
Determine the term - Photolithography As used in manufacture of I.C.S, it is the process of transferring geometrical shapes on a mask to surface of a silicon wafer. Photomask
What is the chemical formula for hard water?
Q. Write short notes on priming and foaming. Ans. Priming and foaming: When a boiler produces steam rapidly, some particles of the liquid water are carried along with the s
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