Trifluoromethane or fluoroform is the chemical compound with the formula CHF3. It is one of the "haloforms", a class of compounds with the formula CHX3 (X = halogen) with C3v symmetry. Fluoroform is used in diverse applications in organic synthesis. It is not an ozone depleter but is a greenhouse gas. See more About 20M kg/y are produced industrially as both a by-product of and precursor to the manufacture of Teflon. It is produced by reaction of chloroform with HF: CHCl3 + 3 HF → CHF3 + 3 HCl It is also generated … See more CHF3 is used in the semiconductor industry in plasma etching of silicon oxide and silicon nitride. Known as R-23 or HFC-23, it was also a useful refrigerant, sometimes as a replacement for See more • McBee E. T. (1947). "Fluorine Chemistry". Industrial & Engineering Chemistry. 39 (3): 236–237. doi:10.1021/ie50447a002. • Oram D. E.; Sturges W. T.; Penkett S. A.; McCulloch A.; … See more CHF3 is a potent greenhouse gas. A ton of HFC-23 in the atmosphere has the same effect as 11,700 tons of carbon dioxide. This equivalency, also called a 100-yr global warming potential See more • International Chemical Safety Card 0577 • MSDS at Oxford University • MSDS at mathesontrigas.com • Coupling of fluoroform with aldehydes using an electrogenerated base See more WebJul 26, 2007 · The reflected shock tube technique with multipass absorption spectrometric detection of OH radicals at 308 nm, using either 36 or 60 optical passes corresponding to total path lengths of 3.25 or 5.25 m, respectively, has been used to study the bimolecular reactions, OH+CF3H-->CF3+H2O (1) and CF3+ …

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Web中央处理器（cpu），是电子计算机的主要设备之一，电脑中的核心配件。 其功能主要是解释计算机指令以及处理计算机软件中的数据。 cpu是计算机中负责读取指令，对指令译码并执行指令的核心部件。 中央处理器主要包括两个部分，即控制器、运算器，其中还包括高速缓冲存储器及实现它们之间 ... Web1 day ago · Lewis structure of CHF3 has 26 valence electrons in which 18 are lone pair electrons and 8 are bond pair electrons. CHF3 has four bond pairs and zero lone pairs so according to VSEPR theory, it has tetrahedral geometry with a bond angle of 109.5 degrees. The hybridization of CHF3 is sp3 in which one s and three p orbitals hybridized together … ch1bb blackburn

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Webspin ON spin OFF; Top contributors to the provenance of Δ f H° of CF3H (g) The 20 contributors listed below account only for 60.0% of the provenance of Δ f H° of CF3H (g). A total of 90 contributors would be needed to account for 90% of the provenance. Please note: The list is limited to 20 most important contributors or, if less, a number sufficient to … WebJan 21, 2007 · Abstract. The potential energy surfaces for the CF3H unimolecular dissociation reaction and reactions of CF3H with free radical OH and H were investigated … WebLearn to determine if CH3OH (Methanol) is polar or non-polar based on the Lewis Structure and the molecular geometry (shape).We start with the Lewis Structur... ch1a-rsx pac