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The Ostwald law of dilution provides a satisfactory description of the concentration dependence of the conductivity of weak electrolytes like CH 3 COOH and NH 4 OH. [3] [4] The variation of molar conductivity is essentially due to the incomplete dissociation of weak electrolytes into ions.
The rearrangement of acetone oxime in the Beckmann solution involved three acetic acid molecules and one proton (present as an oxonium ion). In the transition state leading to the iminium ion (σ-complex), the methyl group migrates to the nitrogen atom in a concerted reaction as the hydroxyl group is expelled.
The Debye–Hückel theory was proposed by Peter Debye and Erich Hückel as a theoretical explanation for departures from ideality in solutions of electrolytes and plasmas. [1] It is a linearized Poisson–Boltzmann model , which assumes an extremely simplified model of electrolyte solution but nevertheless gave accurate predictions of mean ...
A buffer solution is a solution where the pH does not change significantly on dilution or if an acid or base is added at constant temperature. [1] Its pH changes very little when a small amount of strong acid or base is added to it. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical ...
An easy example is that of CFC-12, which gives: 90+12=102 -> 1 carbon, 0 hydrogens, 2 fluorine atoms, and hence 2 chlorine atoms resulting in CCl 2 F 2. The main advantage of this method of deducing the molecular composition in comparison with the method described in the paragraph above is that it gives the number of carbon atoms of the molecule.
According to SIPRI, forty-four US companies accounted for 61 per cent of the Top 100’s arms sales in 2007, while 32 West European companies accounted for 31 per cent of the sales. Russia, Japan, Israel and India accounted for most of the rest. Including US arms sales in US GDP would raise the measure by up to 1.8%.
Through photosynthesis, plants use CO 2 from the atmosphere, water from the ground, and energy from the sun to create sugars used for growth and fuel. [22] While using these sugars as fuel releases carbon back into the atmosphere (photorespiration), growth stores carbon in the physical structures of the plant (i.e. leaves, wood, or non-woody stems). [23]
6517 20528 Ensembl ENSG00000181856 ENSG00000288174 ENSMUSG00000018566 UniProt P14672 P14142 RefSeq (mRNA) NM_001042 NM_009204 NM_001359114 RefSeq (protein) NP_001033 NP_033230 NP_001346043 Location (UCSC) Chr 17: 7.28 – 7.29 Mb Chr 11: 69.83 – 69.84 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Glucose transporter type 4 (GLUT4), also known as solute carrier family 2 ...