ways by which this reduction can occur. One is by a catalytic hydrogenation‚ this uses a catalyst such as palladium or nickel‚ hydrogen gas‚ and heat/pressure. This can reduced an alkane to alkene. This catalytic process is preferred in industrial practices because the cost is low in the long run and more importantly there is little to no waste expense. However‚ hydrogen gas is dangerous due to being very flammable/combustible. Therefore‚ a reducing agent will be used in this experiment instead.
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3-diol.The purple color of KmnO4 will change to brown CH3CH=CHCH2CH3 + KMnO4 (cold) ---> CH3CH2(OH)CH2(OH)CH2CH3 For the experiment between alkane and alkene that react with sulphuric acid‚alkene which is 2-pentene have react and change to ethyl hydrogen sulphate.The alkane‚heptanes doesn’t react as the as the sulphuric acid will act as electrophile. C5H10 + H2SO4 ==> C5H11.HSO4 For the aromatic hydrocarbon‚toluene doesn’t react with bromine water. This is because Br2 is electrophilic enough to
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moles of each element in 1.25 mol glucose (C6H12O6). c) How many molecules of oxygen atoms are present in 5.00 mol diphosphorus pentoxide? d) Calculate the number of moles of hydrogen atoms in 11.5 mol water. e) A sample of ethanol (C2H5OH) has a mass of 45.6 g.How many carbon atoms does the sample contain?How many hydrogen atoms are present?How many oxygen atoms are present? Percent Composition from Chemical a) What is the percent of C & H in C2H6 ? b) What is the percent of each element
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is dropped on all of the metals in period 4‚ then the elements with the largest atomic radii will react faster with Hydrochloric Acid because atoms with bigger atomic radii are more likely to give their electron(s) to the Hydrogen ion/atom‚ thus creating a full shell of Hydrogen and a full shell for the atom we are observing. Independent Variable: Period 4 atomic radii. Dependent Variable: Amount of time it takes for the reaction to be completed. Control Group: Concentration of HCl‚ volume
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Experiment 6 Infra-Red Spectroscopy of HCl and DCl gas Abstract Fourier-transform infrared spectroscopy has been very useful in helping scientists examining molecules of HCl and DCl. Because deuterium has a greater mass than hydrogen‚ the IR band shown for HCl is at a higher wavelength than DCl. The absorption of light in DCl was at lower frequency 1700-2200 cm-1 because D is bigger and heavier. That’s why the vibrations on the IR were shorter for DCl compared to HCl. The stretching of
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ACKNOWLEDGEMENT I express my deep sense of gratitude and indebtness to Dr. Amarjeet Singh Walia‚ HOD of Chemical Engineering Department‚ Seth Jai Prakash Mukand Lal Institute Of Engineering & Technology‚ Radaur‚ Yamunanagar who had provided me a golden opportunity to get my practical training in National Fertilizers Limited‚ Panipat‚ Haryana. I also wish to acknowledge my deep obligation to and all officers of HR Department for the kind behavior‚ constant inspiration and valuable knowledge
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except zinc‚ copper‚ vinegar‚ or a unique container that can increase the voltage of our product. The zinc can produce electricity because of the chemical reaction it occurs when it is soaked in vinegar’s acetic acid‚ the zinc is dissolved to produce hydrogen gas; while the copper’s use is only to move the electrons throughout the entire circuit and connect it to the battery powered object. The main idea we took on our research and personal experiences is that when more batteries are connected‚ more voltage
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w w ap eP m e tr .X w om .c s er UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education 0620/12 CHEMISTRY Paper 1 Multiple Choice May/June 2010 45 Minutes Additional Materials: *8778752636* Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples‚ paper clips‚ highlighters‚ glue or correction
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H3O+(aq) à Zn2+(aq) + 2 H2O(l) + H2(g)] was stopped‚ the nail was removed and rinsed. Once the nail dried‚ it was massed and disposed of. Water was then added to the beaker until its level matched that in the graduated cylinder. The amount of hydrogen gas that was released in the reaction was measured in the graduated cylinder. This was repeated for the other two nails. Data/ Results. Gravimetric analysis was performed by subtracting the mass of the nail after the zinc was removed from the
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elements. 2H2O(l) 2H2(g) + O2(g) 2. (a) Assign oxidation states to the hydrogen and oxygen atoms in each substance in the above chemical equation. The oxidation state of H2(g) and O2(g) is zero‚ because they are in their normal state. (b) Based on the changes in oxidation states for each atom‚ identify the atom that is oxidized and the atom that is reduced in the decomposition of water. Hydrogen atom is reduced because it gains electrons. 2H+ H2(g) Oxygen atom is
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