All chemical reactions where the oxidation numbers of atoms are changed are called redox reactions. Acid-base reactions hold similar characteristics that redox reactions do. Basically‚ redox reactions can be described as a group of reactions that focus on the transfer of electrons. Similarly to acid-base reaction‚ a reduction reaction must be happening simultaneously with an oxidation reaction (Masterton‚ 2008). A loss of electron is called oxidation while reduction is an increase of electrons. Electrons
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driving force. Background Redox (reduction-oxidation) reactions include all chemical reactions in which atoms have their oxidation state changed. So‚ when a metal and a nonmetal react‚ there is an ionic bond formed‚ which means one of them loses electrons while the other gains them. Since this reaction involves the exchange of electrons it is termed as a redox reaction. The oxidation states in a metal- nonmetal are simple to determine because they are given oxidation states similar to their charges
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brass and bronze‚ are very important Has various oxidation states: 0 in elemental copper‚ +1‚ and +2 which is observable in corroded brass/bronze Oxidation states n n n Oxidation state is an indicator of the degree of oxidation of an atom The formal oxidation state is the theoretical charge the atom would have of all bonds were 100% ionic Oxidation is loss of electrons‚ reduction is gain of electrons (OIL RIG) Oxidation States of Copper n n n n n 0
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Chapter 6 Chemical Reactions and Quantities The Mole General‚ Organic‚ and Biological Chemistry Copyright © 2010 Pearson Education‚ Inc. 1 Collection Terms A collection term states a specific number of items. 1 dozen donuts = 12 donuts 1 ream of paper = 500 sheets 1 case = 24 cans General‚ Organic‚ and Biological Chemistry 2 A Mole of Atoms A mole is a collection that contains the same number of particles as there are carbon atoms in 12.0 g of carbon 12C 6.02 x 1023 atoms of
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OUTCOMES 1. Describe composition of matter and chemical change. 2. Explain trends within the periodic table. 3. Describe Chemical Bonding in its various forms 4. Calculate chemical quantities and stoichiometry 5. Explain Oxidation - Reduction reactions 6. Demonstrate a knowledge of Organic Chemistry (Optional Element) LEARNING OUTCOME | ASSESSMENT CRITERIA | 1. Describe composition of matter and chemical change. | 1.1 Describe the nature of matter in terms of atoms and
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respiration 8.1.1 State that oxidation involves the loss of electrons from an element‚ whereas reduction involves a gain of electrons; and that oxidation frequently involves gaining oxygen or losing hydrogen‚ whereas reduction frequently involves losing oxygen or gaining hydrogen Oxidation involves the loss of electrons from an element‚ whereas reduction involves a gain of electrons; and that oxidation frequently involves gaining oxygen or losing hydrogen‚ whereas reduction frequently involves losing
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THE 4 QUALITIES OF GOOD WATER by Dr. Robert O. Young There are many measurements of water‚ but the most important for determining the best water to drink are‚ the pH‚ oxidative reduction potential—or energy potential/activity—molecular structure‚ and purity. Science has helped us to determine that the best measurements for our drinking water are the pH and purity‚ but little understood is the importance of the molecular structure of water. Assuming that most waters that humans are drinking
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CHM 096 TUTORIAL 6 Mar 2013 (ELECTROCHEMISTRY) 1. Determine the oxidation number of the first name element in the following ions. a) Cr2O72 d) AsO33 b) SbF6 e) BaH2 c) MoO42 f) ClO4− 2. Determine whether each of the reactants shown in the following half-reactions is being oxidized or reduced. a) As4+ As3+ b) Cl2O7 HClO4 c) C2H4O C2H6O d) SO2 SO42− e) Cr2O72− Cr3+ 3. Indicate whether each of the following is or
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exchanged in double displacement reactions. EXOTHERMIC REACTION :-- Reaction in which heat generated is called exothermic reaction. ENDOTHERMIC REACTION :-- Reaction in which energy is absorbed is known as endothermic reaction. Oxidation and Reduction OXIDATION :-- Oxidation is the gain of oxygen or
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eukaryotic organelles (mitochondria‚ chloroplasts) CELLULAR RESPIRATION GLUCOSE 1 2 GLYCOLYSIS 1 PYRUVATE OXIDATION2 KREBS CYCLE 3 2 ELECTRON TRANSPORT 4 CHAIN 2 NET ATP PRODUCED = 36 Nelson‚ 2003 Redox Reactions • Reduction-oxidation reactions – Transfer electrons from donor to acceptor atoms • Donor is oxidized as it releases electrons • Acceptor is reduced as it accepts electrons Cellular Respiration Series of chemical reactions and electron exchanges that convert
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