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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
Br2(g)=2Br(g) dG=161.69KJ/mol at 298.15K Find kc and kp.
addition of different regent in sample of salt changes its colour
aromatic carboxylic acids
Stability of gem diols lies on the following factors: (a) Steric hindrance by +I group around α-carbon decreases the stability of gem diols. +I group decreases stability of gem
Which set of quantum numbers for an electron of an atom is not possible: (1) n=1 l=0, m=-0, s= +1/2 (2) n=1, l=1, m=-1, s= +1/2 (3) n=1, l=0, m=0, s= -1/2 (4) n=
how to do nomenclature in organic chemistry
Nitrite rubbers (Gr-A or Buna-N or NBR): Nitrite rubber is prepared by the copolymerization of butadiene and acrylonitrile in emulsion systems. Properties: 1.
How is harvest maturity identified? Before harvesting, the first thing to be looked into is the identification of harvest maturity. We have already seen what the term ac
Test Ethyl cyanide Ethyl isocyanide Smell Strong but pleasant Extremely unpleasant Dipole moment
The surface area of the Pacific Ocean is 166000000000000m 2 . Write this quantity in scientific notation. To write the amount in scientific notation move the decimal point to after
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