{"id":8583,"date":"2023-09-10T13:44:00","date_gmt":"2023-09-10T12:44:00","guid":{"rendered":"https:\/\/exos.education\/fr\/exercice-biochimie-oxydo-redution-niveau-seconde\/"},"modified":"2023-08-21T14:54:25","modified_gmt":"2023-08-21T13:54:25","slug":"exercice-biochimie-oxydo-redution-niveau-seconde","status":"publish","type":"post","link":"https:\/\/exos.education\/fr\/exercice-biochimie-oxydo-redution-niveau-seconde\/","title":{"rendered":"Exercice Biochimie Oxydo-R\u00e9dution Niveau Seconde"},"content":{"rendered":"<p>Cours : R\u00e9actions d&rsquo;oxydo-r\u00e9duction <img decoding=\"async\" draggable=false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f30d.svg\"><img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\"\u2728\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/2728.svg\"><\/p>\n<p>Dans une r\u00e9action d&rsquo;oxydo-r\u00e9ductionl&rsquo;\u00e9lectron est transfer\u00e9 d&rsquo;une mol\u00e9cule ou ion r\u00e9ducteur \u00e0 une mol\u00e9cule ou ion oxydant. Les notions cl\u00e9s dans ces syst\u00e8mes r\u00e9dox sont l&rsquo;oxydation et la r\u00e9duction. L&rsquo;Oxydation est d\u00e9finie comme la perte des \u00e9lectrons tandis que la R\u00e9duction est gain des \u00e9lectrons <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f4a1.svg\"><\/p>\n<p>Exercice : QCM sur les R\u00e9actions d&rsquo;oxydo-r\u00e9duction <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\"\u23f1\ufe0f\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/23f1.svg\"><img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\"\u2697\ufe0f\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/2697.svg\"><img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f9ea.svg\"><\/p>\n<p>Consignes : Coche seulement le r\u00e9ponse correcte pour chaque question.<\/p>\n<p>1) La notion d&rsquo;Oxydation correspond \u00e0 :<br \/>   a. Perte de protons<br \/>   b. Gain de protons<br \/>   c. Perte d&rsquo;\u00e9lectrons<br \/>   d. Gain d&rsquo;\u00e9lectrons<\/p>\n<p>2) Dans un syst\u00e8me redoxl\u2019esp\u00e8ce qui c\u00e8de un ou plusieurs \u00e9lectrons s\u2019appelle :<br \/>  a. Oxydant<br \/>  b.  R\u00e9ducteur <br \/>  c. Neutre  <br \/>  D.est aucun des ci-dessus<\/p>\n<p>3) Quel est le r\u00f4le du fer dans la corrossion ?<br \/>    a.L\u2019\u00e9lectrolyte.<br \/>    b.M\u00e9tal sacrificiel.<br \/>    C.Il copeauxsans r\u00f4le.<br \/>    D.Oxydant <\/p>\n<p> Correction :<\/p>\n<p>1) La r\u00e9ponse correcte est c . L&rsquo;Oxydation correspond \u00e0 \u00ab\u00a0la perte des \u00e9lectron\u00a0\u00bb<br \/>2) La bonne r\u00e9ponse est \u00e9videmment b . Un reducteur donne toujours ses \u00e9l\u00e9ctons ! <br \/>3) Le fer joue essentiellement le r\u00f4le de r\u00e9actif donc il se comporte comme un oxydent (la bonne r\u00e9ponse \u00e9tait D)<\/p>\n<p>Cet exercice vise \u00e0 renforcer votre compr\u00e9hension des principes fondamentaux en Biochimie concernant les reactions RedOx <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f44d.svg\"><img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f642.svg\"> Il vous permet aussi de faire une auto-\u00e9valuation sur ce sujet apr\u00e8s avoir \u00e9tudier ce chapitre en classe.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cours : R\u00e9actions d&rsquo;oxydo-r\u00e9duction<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[54,8,5,4,318,1],"tags":[],"class_list":["post-8583","post","type-post","status-publish","format-standard","hentry","category-2nde","category-sciences","category-niveaux","category-matieres","category-pas-dadaptation-particuliere","category-exercices-pedagogiques-imprimables-et-gratuits"],"_links":{"self":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts\/8583","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/comments?post=8583"}],"version-history":[{"count":0,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts\/8583\/revisions"}],"wp:attachment":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/media?parent=8583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/categories?post=8583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/tags?post=8583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}