and the residue is dissolved in 1 L of 6 Msodium hydroxide and refluxed for 4 hr. The mixture is saturated with potassium carbonate(ca. 400 g); cooled; filtered through a Celite pad on a coarse, fritted funnel; and extracted withthree ...
Process for the catalytic hydrogenation of a nitrite in the presence of an amine and a catalyst wherein the catalyst is a liquid-rinsed Raney-type catalyst contacted with a hydroxide prior to contacting the catalyst with the amine. The process results in higher selectivity in the formation of ...
Solubility of a substance is a basic property of a solid/ liquid or gas. It depends on both physical(temperature, pressure) & chemical(pH of the solvent) properties of both the solute & the solvent. The extent of solubility of a substance in a solution is seen by saturation concentration,...
The present invention is directed to an improved method for carrying out a exothermic chemical reaction with carbon dioxide in an aqueous environment. In the method, a fluid solution containing at least one chemical reactant which is exothermically reactive with carbon dioxide is provided. Liquid ca...
Is NH3 liquid or gas? Ammonia is acolourless gaswith a characteristically pungent smell. It is lighter than air, its density being 0.589 times that of air. It is easily liquefied due to the strong hydrogen bonding between molecules; the liquid boils at −33.3 °C (−27.94 °F), and...
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The saleable by-product, depending on the plant’s design, could be elemental sulfur, sulfuric acid, or liquid sulfur dioxide. The sodium bicarbonate injection process is a direct injection method adapted to desulfurize the flue gas by injection of sodium bicarbonate into the duct after the air...
Find out about the science and chemistry of Water (dihydrogen monoxide, hydroxic acid, hydrogen hydroxide), see colourful images of Water and explore interactive 3D molecules of Water
If there is no dosage, it should be taken as the minimum amount: liquid 1-2 mL, solid only need to be covered with the bottom of the test tube. (3) the remaining drugs in the experiment can neither be returned to the original bottle, nor discarded at will, not to be taken out ...
The refill opening on refillable lab electrodes must always be open when measuring or calibrating. Response time is typically faster with refillable electrodes. Also, electrodes with liquid electrolyte have fewer limitations in their range of use, as gel and polymer electrolytes have a lower resistance...