Experiment 8 Unique # 51070 The main purpose of the experiment involves two oxidation-reduction reactions to calculate the oxidizing capacity of a sample of unknown bleach. In order to determine the volume of Na2S2O3 added‚ students will conduct a titration of bleach with thiosulfate with addition of a starch indicator to find the end point of the titration. Moreover‚ the oxidizing capacity of bleach is calculated with the percentage by mass of NaOCl in the unknown bleach sample. The overall
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Introduction: The oxidation of cyclohexanol involves using household bleach to oxidize this secondary alcohol and produce a ketone product‚ cyclohexanone. Oxidation-reduction (redox) reactions occur when the oxidation state of atoms change due to a transfer of electrons. Oxidation occurs when electrons are ‘lost’ to the formation of bonds and reduction occurs when electrons are ‘gained’ in the braking of bonds (Levine). Using this reaction and its product‚ a redox experiment was performed to familiarize
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sulft pentahydrate CuSo4.5H2o AR Sinopharm Chemical Reagent Co.Ltd Sodium hydroxide NaOH AR Sinopharm Chemical Reagent Co.Ltd Potassium Sodium Tartrate Tertrahy drat C4H4O6KN4 .4H2O AR Sinopharm Chemical Reagent Co.Ltd Silver Nitrate AgNO3 AR Sinopharm Chemical Reagent Co.Ltd Trisodium Citrate dihydrate C6H5Na3O7.2H2O AR Sinopharm Chemical Reagent Co.Ltd Hydrogen Peroxide H2O2 AR Sinopharm Chemical Reagent Co.Ltd Sodium borohydride NaBH4 AR Sinopharm Chemical Reagent
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–II UNIT-I Electrochemistry Principles Redox reactions Redox stands for reduction-oxidation‚ and are electrochemical processes involving electron transfer to or from a molecule or ion changing its oxidation state. This reaction can occur through the application of an external voltage or through the release of chemical energy. Oxidation and reduction Oxidation and reduction describe the change of oxidation state that takes place in the atoms‚ ions or molecules involved
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chemical compounds also known as electrolysis. Therefore leaving us sodium‚ chlorine gas‚ hydrogen gas and oxygen gas. If you are wondering where I got this from here’s how: Salt is NaCl which is Sodium Chloride separate that and you get sodium and chlorine gas. Water is H20 which is Dihydrogen Monoxide (2 part hydrogen and one part oxygen) sepaprate that and you get hydrogen gas and oxygen gas. Anyway‚ hydrogen gas and sodium are both positive ions (atoms)‚ because opposites attract both of
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makes it a stronger acid than ammonia but weaker than alcohols Acidity Acetylene reacts with sodium amide to form sodium acetylide – HC CH + pK a 25 S tronger acid NH2 S tronger base HC C- + Weaker base N H3 pK a 38 Weaker acid It can also be converted to its metal salt by reaction with sodium hydride or lithium diisopropylamide (LDA) + Na H – Sodium hydride [ ( CH3 ) 2 CH] 2 N – Li + Lithium diisopropylamide (LDA) Alkylation of Acetylides
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OXIDATION AND REDUCTION Oxygen makes up only about 20% of the air‚ yet is the essential component for so many reactions. Without it fuels would not burn‚ iron would not rust and we would be unable to obtain energy from our food molecules through respiration. Indeed animal life on the planet did not evolve until a certain concentration of oxygen had built up in the atmosphere over 600 million years ago. The term oxidation has been in use for a long time to describe these and other reactions where
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Situation: Two patients in their 70s present to the office at different times today‚ each with documented heart failure: one diastolic and the other systolic‚ and both are hypertensive. First‚ discuss the difference between systolic and diastolic heart failure‚ providing appropriate pathophysiology. ACEI/ARBs are the only medications prescribed for CHF that have been found to prolong life and improve the quality of that life. EXPLAIN the mechanism of action of ACEI/ARBs and how they affect morbidity
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alloy powders manufacture are known. Currently‚ chemical reduction‚ hydrogenation/dehydrogenation‚ gas atomization‚ plasma-rotating electrode and plasma atomization processes are mainly used for commercial production. a) Chemical reduction Generally‚ the initial source of titanium powder is ` sponge fines ’ ‚ so-called owing to their appearance. Sponge fines are nodular particles of pure titanium produced during the chemical reduction pro-cess from titanium tetrachloride. The commercial manufacture
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of Water Introduction: Demonstrate the decomposition of water in simple but very colorful and dramatic fashion on an overhead projector. Concepts: • Decomposition reaction • Oxidation–reduction • Electrolysis • pH Materials: Sodium Chloride/universal indicator solution‚ NaCl‚ 25 mL Overhead projector Pencil lead‚ 0.7 mm Battery lead with alligator clips Petri dish‚ disposable Battery‚ 9-Volt Graduated cylinder‚ 25- mL Safety Precautions:
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