'Fe 3 fe 2' diaporamas de présentation

??? ???????

1.06k views • 76 slides

??? ???????

??? ???????. ??????????????????????. ????????????????????. ??? ??????. ??????. ??????. Ox+ne - Red. ???????? E ???????????? 25? ??. Fe 3+ +e - Fe 2+. ? 25? ??????. ????????. ? 1mol?L -1 ???. Fe ? ? ????? Fe 3+ ? FeOH 2+ ? FeCl 2+ ? FeCl 2 + ??.

876 views • 63 slides

11/17/2014

Institute of Food and Agricultural Sciences (IFAS) . Biogeochemistry of Wetlands Science and Applications. Electrochemical Properties. Wetland Biogeochemistry Laboratory Soil and Water Science Department University of Florida. Instructor K. Ramesh Reddy krr@ufl.edu. 11/17/2014. 1.

766 views • 54 slides

Oxidation-Reduction (Redox) Reactions

760 views • 50 slides

Coupled reactions

Coupled reactions. Coupled reaction : D G (free energy released) in the exergonic reaction (- D G) > D G required for endergonic reaction (+ D G) Oxidation : reaction in which electrons are lost; substance losing e - is e - donor or reducing agent

1.51k views • 47 slides

Redox Geochemistry

Redox Geochemistry. WHY?. Redox gradients drive life processes! The transfer of electrons between oxidants and reactants is harnessed as the battery, the source of metabolic energy for organisms

525 views • 39 slides

True or false? Blood is red because of the iron in hemoglobin.

392 views • 28 slides

Energy and Respiration

Energy and Respiration. 1. Energy and food. The amount of energy available from a certain food is sometimes called its caloric value The average adult requires about 8400 Kilojoules (2000 kilocalories) of energy per day

281 views • 27 slides

REDOX CLASSIFICATION OF NATURAL WATERS

REDOX CLASSIFICATION OF NATURAL WATERS. Oxic waters - waters that contain measurable dissolved oxygen. Suboxic waters - waters that lack measurable oxygen or sulfide, but do contain significant dissolved iron (> ~0.1 mg L -1 ).

287 views • 27 slides

Energy and Respiration

Energy and Respiration. Larry Scheffler Lincoln High School 2009-2010. 1. Energy and food. The amount of energy available from a certain food is sometimes called its calorific value The average adult requires about 8400 Kilojoules (2000 kcal) of energy per day

376 views • 25 slides

Ch. 5 Oxidation and Reduction

Ch. 5 Oxidation and Reduction. Milbank High School. Ch. 5 Objectives. Define some important properties of oxygen List important properties of hydrogen Describe oxidation and reduction Identify an oxidation/reduction reaction Identify some common oxidizing and reducing agents

590 views • 22 slides

Oxidation and Reduction

413 views • 22 slides

3 rd lecture

Reduction- Oxidation Reactions. 3 rd lecture. Learning Objectives What are some of the key things we learned from this lecture ?. Calculating redox titration curves D etection of end point in redox titration Redox indicators. -Requirements of a redox indicator

265 views • 18 slides

Redox Titrations

Redox Titrations. Oxidation-reduction reactions involve a transfer of electrons. The oxidising agent accepts electrons and the reducing agent gives electrons. In working out the equation for a redox reaction we can use the half-equation method.

258 views • 10 slides

??? ??????????

??? ??????????. ????. ???. P51 ???? ??. ?????. ???????. ????. 2FeCl 3 +Fe=3FeCl 2. ?????. 2FeCl 2 +Cl 2 =2FeCl 3. back. ??. 2. ???????. ? 1 ? Fe 3+ ??? ?? Fe 3+ ?????? KSCN ????? ??? ?????????? Fe 3+ ???? ? 2 ? Fe 3+ ???? 2Fe 3+ + Fe = 3Fe 2+ ?.

315 views • 8 slides