stoichiometric quantity वाक्य
उदाहरण वाक्य
मोबाइल
- A stoichiometric quantity of the catalysts is needed for a full conversion.
- Epoxies are typically cured with stoichiometric or near-stoichiometric quantities of curative to achieve maximum physical properties.
- Because the nucleophilic catalyst is reproduced at the end of the reaction, only small stoichiometric quantities are required.
- As the thiazolium is destroyed under these conditions, it is not catalytic and must be used in stoichiometric quantities.
- Can be prepared by the evaporation of stoichiometric quantities of and in concentrated aqueous, or by reacting with in ethanol.
- The OAt anion rapidly attacks the isouronium salt, affording the OAt-active ester and liberating a stoichiometric quantity of tetramethylurea.
- This category was created to provide a " home " for chemical compounds which are widely used in stoichiometric quantities in biochemistry.
- Rubidium silver iodide can be formed by melting together or grinding together stoichiometric quantities of rubidium iodide and silver ( I ) iodide.
- Ferric and aluminium chlorides are catalysts for the Friedel-Crafts reaction, but due to their low cost, they are often added in stoichiometric quantities.
- This phase is synthesised by heating stoichiometric quantities of these oxides together and then quenching the material by rapidly cooling it from approximately 900 �C to room temperature.
- However, toxic phosgene is used, and stoichiometric quantities of base ( e . g . pyridine ) are required to neutralize the hydrogen chloride that is cogenerated.
- In the first step, a stoichiometric quantity of triethyl aluminium in olefin diluent is reacted with excess ethylene at high pressure ( above 1000 psig ) and relatively low temperature ( below 400 �F ).
- A modification has also been reported in which DEAD can be used in catalytic versus stoichiometric quantities, however this procedure requires the use of stoichiometric ( diacetoxyiodo ) benzene to oxidise the hydrazine by-product back to DEAD.
- Examples include the Cannizzaro reaction, where approximately 50 % of the reactant aldehyde becomes the other oxidation state of the target, the Wittig reaction, where high-mass phosphorus reagents are used but ultimately become waste, and the Gabriel synthesis, which produces a stoichiometric quantity of phthalic acid
- The main disadvantage of direct acylation is the unfavorable chemical equilibrium that must be remedied ( e . g . by a large excess of one of the reagents ), or by the removal of water ( e . g . by using Dean-Stark distillation, anhydrous salts, molecular sieves, or by using a stoichiometric quantity of acid catalyst ).
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