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unit 17 organic compounds containing oxygen and nitrogen atoms
unit 17 organic compounds containing oxygen and nitrogen atoms

... ketons with general formula RCOR'. Aldehydes and ketones have the same general formula CnH,"O. Since carbonyl group is present in both aldehydes and ketones, many of their properties are common. But in aldehyde, there is also a reactive hydrogen atom, which confers reducing properties upon the molec ...
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... • When doing a titration you add titrant (standard solution) to the analyte (unknown concentration solution) until the endpoint or the equivalence point is reached. This point is when you have equal moles of titrant and analyte, from the volume of the titrant and analyte used and the molarity of the ...
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... 4) Li : is the proper Lewis structure (dot structure) for lithium. 5) Lewis theory predicts that the formula for a compound made of aluminum and phosphorus is AlP. 6) The correct Lewis structure for CO2 shows that the carbon atom has two sets of lone pair electrons. 7) The VSEPR theory predicts that ...
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... Structural isomerism All the alkenes with 4 or more carbon atoms in them show structural isomerism. This means that there are two or more different structural formulae that you can draw for each molecular formula. For example, with C4H8, it isn't too difficult to come up with these three structural ...
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... If you examine this equation carefully, you will notice that the number of atoms on the left side does not equal the number of atoms on the right. The equation is not balanced. In order to show that mass is conserved during a reaction, a chemical equation must be balanced. You can balance a chemical ...
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... Chemists use chemical equations to: a. Summarize a chemical reaction by displaying the substances reacting and forming. b. Indicate specific amounts of materials consumed or produced during the reaction. ...
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... Sulfonate esters make good leaving groups because the pKa of their conjugate acids is ~-6.5, roughly the same as that for Cl-. As such, another strategy for making alcohols a better leaving group is to convert them into a halide! ...
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... Sulfonate esters make good leaving groups because the pKa of their conjugate acids is ~-6.5, roughly the same as that for Cl-. As such, another strategy for making alcohols a better leaving group is to convert them into a halide! ...
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Chemistry - Silk Road International School

... Describe the production of heat energy by burning fuels Describe hydrogen as a fuel Describe radioactive isotopes, such as 235 U, as a source of energy Describe the idea that some chemical reactions can be reversed by changing the reaction conditions Limited to the effects of heat on hydrated salts ...
Encoded Digital Periodic Table
Encoded Digital Periodic Table

< 1 ... 156 157 158 159 160 161 162 163 164 ... 547 >

Physical organic chemistry

Physical organic chemistry, a term coined by Louis Hammett in 1940, refers to a discipline of organic chemistry that focuses on the relationship between chemical structures and reactivity, in particular, applying experimental tools of physical chemistry to the study of organic molecules. Specific focal points of study include the rates of organic reactions, the relative chemical stabilities of the starting materials, reactive intermediates, transition states, and products of chemical reactions, and non-covalent aspects of solvation and molecular interactions that influence chemical reactivity. Such studies provide theoretical and practical frameworks to understand how changes in structure in solution or solid-state contexts impact reaction mechanism and rate for each organic reaction of interest. Physical organic chemists use theoretical and experimental approaches work to understand these foundational problems in organic chemistry, including classical and statistical thermodynamic calculations, quantum mechanical theory and computational chemistry, as well as experimental spectroscopy (e.g., NMR), spectrometry (e.g., MS), and crystallography approaches. The field therefore has applications to a wide variety of more specialized fields, including electro- and photochemistry, polymer and supramolecular chemistry, and bioorganic chemistry, enzymology, and chemical biology, as well as to commercial enterprises involving process chemistry, chemical engineering, materials science and nanotechnology, and drug discovery.
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