PDF-Oxidation (Redox) Control

Reduction in Ohiox2019s Ground Water Quality Division of Drinking and Ground Waters Technical Series on Ground Water Quality November 2014 2 T he Technical Series on Ground Water Quality This. Part 1. Notes 11. Beginning Unit 4. Salt on icy roads can make driving safer, but the salt that clings to the metallic parts of cars can cause them to corrode or rust relatively quickly. . This corrosion is one example of a chemical reaction called oxidation-reduction. You will learn about oxidation-reduction reactions.. Oxidation and Reduction. Oxidation-reduction (. redox. ) reactions involve transfer of electrons. Oxidation – loss of electrons. Reduction – gain of electrons. Both half-reactions must happen at the same time. Starter . What is . redox. ?. Redox – what?. Oxidation and reduction happen at the same time. There is no net gain or loss of electrons.. e. -. You can’t just create them or destroy them!. Example: the . Definition. If oxidation occurs, then reduction must also occur. Any chemical process in which elements undergo a change in oxidation number is a . Redox reaction. Example. 2Na + Cl. 2. . → 2Na. Redox. ) Reactions. Chapter 20. Salt on icy roads can make driving safer, but the salt that clings to the metallic parts of cars can cause them to corrode or rust relatively quickly. This corrosion is one example of a chemical reaction called oxidation-reduction. You will learn about oxidation-reduction reactions.. Lecture 9. Law of Mass Action. Important to remember our equation. describes the . equilibrium. condition. At non-equilibrium conditions it is called the . reaction quotient, Q. .. Written for the reaction H. Aka REDOX reactions. Electrochemistry. The study of chemical reactions involving the transfer of electrons between reactants. . Oxidation. Loss of electrons. happens at the anode. Reduction. gain of electrons. REDOX REACTIONS . OILRIG – . O. xidation . I. s . L. oss of electrons. . R. eduction . I. s . g. ain of electrons. This is really important. Think of January sales!. OXIDATION NUMBER RULES. Oxidation numbers which are assigned to ions (of each element) in a compound help us to write half equations and full ionic equations.. electrons. gained. lost. Red. uction and . ox. idation reactions – . redox. . reactions. o. xygen atoms. lost. gained. A. re . these reactions . examples of oxidation or reduction?. 1. . C. . What is this NCEA Achievement Standard?. When a student achieves a standard, they gain a number of credits. Students must achieve a certain number of credits to gain an NCEA . certificate (80 for Level 3). 1.2.3: Redox explains the chemistry behind batteries and electroplating precious metals onto strong base metals. It also explains how to break apart water into hydrogen and oxygen, and lots more.. 4: These 2 reactions are always paired and balanced.. Textbook Chapter 20. Discovery Lab. What was clinging to the nail?. What happened to the color of CuSO. 4. solution?. What is the balanced equation?. Discovery Lab. What type of reaction occurred?. What are the four types of reactions we learned about previously?. Carbon Cycling. Louis A. Derry. Cornell University. Snapshot of modern/recent data: impact of Himalaya on C cycle. Hundreds of hot springs along Himalayan front, “MCT zone” (Oldham, J . Geol. . Soc. 2A. l. (s) + 3H. 2. SO. 4. (. aq. ) → A. l. 2. (SO. 4. ). 3. (. aq. ) + 3H. 2. (g). Using oxidation numbers, show which element has been oxidised and which has been reduced in this reaction. State the changes in oxidation numbers, including all signs..