13C NMR with 4 peaks‚ so the compound would need to have a five-carbon chain. With the assumption that the structure was five-carbon chain‚ it could be deduced that the structure was either a primary or secondary alcohol because straight chained alkanes cannot make tertiary
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Hence‚ these elements do not easily gain electrons because of the weak attraction to the nucleus. Moreover‚ as you move down groups 6 and 7‚ reactivity decreases. For example‚ chlorine was the most reactive than bromine and iodine‚ which makes sense because chlorine is placed above bromine on the periodic
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* Unsaturated: Carbon compounds in which more than one pair of electrons are shared between two carbon atoms. Based on the nature of the carbon chain they are grouped as‚ * Chain form * Branched form * Ring form Alkane‚ Alkene and Alkyne…….. Alkane: Saturated hydrocarbons. Represented by a general form >> CnH2n+2 Alkenes: Unsaturated hydrocarbons. Double bond between two carbon atoms. Represented
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chloride was synthesized through the use of separation (aqueous and organic layers) and distillation. Tert-butyl chloride is the alkyl halide which is being synthesized throughout the course of the experiment. Alkyl halides are derived from alkanes. Once an alkane has its original hydrogen atom replaced with a halogen‚ it is now considered an alkyl halide (UC 2016). This experiment utilizes chlorine as the halogen that takes the place of the hydrogen atom. Alkyl halides are versatile‚ and with little
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Fluid Catalytic Cracking Fluid catalytic cracking* (FCC) is the most important conversion process used in petroleum refineries. It is widely used to convert the high-boiling hydrocarbonfractions of petroleum crude oils into more valuable [1][2][3] gasoline‚ olefinic gases and other products. . Cracking of petroleum hydrocarbons for conversion of heavy fractions into lighter fractions was originally done by thermal cracking which has been almost completely replaced by catalytic cracking because
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The reaction produced very low yield of 6.3% due to the nature of the reaction and the speed at which iodine reacts. The purity of E-Stilbene could have been increased by allowing the reaction to perform longer and to use a faster reactant such as Bromine. Introduction: In this experiment a Wittig
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an unmeasured excess of KBrO3 will be added to an acidified solution of the standard potassium bromate till the faint yellow color appears. This excess of bromine can be determined iodometrically with standard thiosulfate solution. The ascorbic acid is oxidize by air so the titration should be performed quickly. + Br2 → + 2Br- + 2H+ The bromine or iodine used in titration is generated by adding an excess amount of KBr or KI to an acidified solution of the sample according to the following reaction:
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Question 1 0 out of 2 points When electricity is passed through molten potassium bromide‚ two simpler substances‚ potassium and bromine‚ are produced. Therefore‚ potassium bromide Selected Answer: has less mass than the resulting potassium and bromine do. Correct Answer: cannot be an element. Question 2 2 out of 2 points Which of the following parts (postulates) of Dalton’s atomic theory has been modified in light of later discoveries? Selected
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CLASSIFICATION TESTS A. Acids There are relatively few suitable tests for carboxylic acids. Classification is based mostly upon solubility tests. If the compound is water soluble‚ test the aqueous solution of your compound with pH paper (also check the pH of the original water). If the compound is water-insoluble and it dissolves in 5% (1.5M) sodium hydroxide and 5% NaHCO3 solutions as performed in your solubility tests‚ it can be classified as a carboxylic acid. Establish an equivalence value
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claimed to soak up selenium deposits. 2. Chewing of tobacco leads to . . . . . cancer. a. oral b. lung c. breast d. stomach Smoking and chewing of tobacco leads to oral cancer. 3. . . . . . . prevents dental caries. a. Chlorine b. Iodine c. Bromine d. Fluorine Fluorine prevents dental caries. 4. Direct measures of population control include . . . . . . a. open heart surgery b. awareness about the idea of birth control c. promotion of women’s education d. sterilization operation Direct
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