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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
Why is ammonium (NH4) seperately placed in zeroth group in detection of basic radical in qualitative analyisis?
it is impossibe to synthesise orgnic compounds in the lab since life force is essential for their formation -theory is known as
The number of electrons in c l - ion is: (1) 19 (2) 20 (3) 18 (4) 35 Ans: 18
Physical properties of Iodoform or tri-iodomethane (a) Iodoform is a yellow crystalline solid. (b) Iodoform has a pungent characteristic odour. (c) Iodoform is not solubl
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The Basicity is 3 as there are 3 H atoms that can be displaced from compound.
How can you identify the phenolic-OH gr. of an organic compound which also contain an electron withdrawing group?
what are the diagonal relationship between berylium and aluminium
Each element has a unique number of protons. This unique number is known as the element's atomic number . All atoms of a given element have the same atomic number. For example:
Q. What is graph? A graph is a visual demonstrate of data. Demonstrating your data in graphs is able to reveal a pattern if one exists. You will encounter numerous different
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