{"id":1003,"date":"2020-06-03T11:12:53","date_gmt":"2020-06-03T09:12:53","guid":{"rendered":"http:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/?p=1003"},"modified":"2022-02-08T08:48:50","modified_gmt":"2022-02-08T07:48:50","slug":"dosages-courants","status":"publish","type":"post","link":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/2020\/06\/03\/dosages-courants\/","title":{"rendered":"Dosages courants"},"content":{"rendered":"

Voici un petit tableau r\u00e9capitulatif des dosages couramment utilis\u00e9s au labo avec les produits \u00e0 doser, l’indicateur color\u00e9 et la formule de calcul de concentration du dosage…<\/p>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
produit<\/td>\nr\u00e9actif<\/td>\nindicateur color\u00e9<\/td>\ncalcul<\/td>\nexemple de concentrations<\/td>\n<\/tr>\n
acide \u00e9thano\u00efque<\/td>\nNaOH<\/td>\nph\u00e9nolphtal\u00e9ine<\/td>\nCaVa=CbVb<\/td>\n<\/td>\n<\/tr>\n
ammoniaque<\/td>\nHCl<\/td>\nrouge d em\u00e9thyl<\/td>\nCaVa=CbVb<\/td>\n<\/td>\n<\/tr>\n
I2<\/sub><\/td>\nthiosulfate de sodium<\/td>\nthiod\u00e8ne<\/td>\n2CI<\/sub>VI<\/sub>=Cthio<\/sub>Vthio<\/sub><\/td>\nCI<\/sub>=4.10-2 <\/sup>mol\/L<\/p>\n

VI<\/sub>=10mL<\/p>\n

Cthio<\/sub>=0,1 mol\/L<\/p>\n

Veq<\/sub>\u22487,8mL<\/td>\n<\/tr>\n

HCl<\/td>\nNaOH<\/td>\nBBT<\/td>\nCaVa=CbVb<\/td>\n<\/td>\n<\/tr>\n
KMnO4<\/sub><\/td>\nsel de Mohr acidifi\u00e9<\/td>\n<\/td>\n5CKMnO4<\/sub>VKMnO4<\/sub>=CFe<\/sub>VFe<\/sub><\/td>\nCKMnO4<\/sub>=1.10-2<\/sup>mol.L<\/p>\n

VKMnO4<\/sub>=12mL<\/p>\n

CFe<\/sub>=3.10-2<\/sup>mol\/L<\/p>\n

VFe<\/sub>=20mL<\/td>\n<\/tr>\n

KMnO4<\/sub><\/td>\nH2<\/sub>O2<\/sub><\/td>\n<\/td>\n5CKMnO4<\/sub>VKMnO4<\/sub>=2CH2O2<\/sub>VH2O2<\/sub><\/td>\nCKMnO4<\/sub>=2.10-2<\/sup>mol\/L<\/p>\n

VKMnO4<\/sub>=17,6mL<\/p>\n

CH2O2<\/sub>=8,8.10-2<\/sup>mol\/L<\/p>\n

VH2O2<\/sub>=10mL<\/td>\n<\/tr>\n

AgNO3<\/sub><\/td>\nNaCl<\/td>\nconductim\u00e9trique<\/p>\n

ou<\/p>\n

dichromate de potassium<\/td>\n

CAg<\/sub>VAg<\/sub>=CCl-<\/sub>VCl-<\/sub><\/td>\n<\/td>\n<\/tr>\n
H2<\/sub>SO4<\/sub><\/td>\nNaOH<\/td>\nBBT<\/td>\n2CaVa=CbVb<\/td>\nCa=0,05 mol\/L<\/p>\n

Va=10mL<\/p>\n

Cb=0,1mol\/L<\/p>\n

Vb=10mL<\/td>\n<\/tr>\n

<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Retrouvez les calculs pour pr\u00e9parer les solutions couramment utilis\u00e9es au labo de chimie dans l’article suivant \u21d2<\/a><\/h2>\n","protected":false},"excerpt":{"rendered":"

Voici un petit tableau r\u00e9capitulatif des dosages couramment utilis\u00e9s au labo avec les produits \u00e0 doser, l’indicateur color\u00e9 et la formule de calcul de concentration du dosage…   produit r\u00e9actif indicateur color\u00e9 calcul exemple de concentrations acide \u00e9thano\u00efque NaOH ph\u00e9nolphtal\u00e9ine CaVa=CbVb ammoniaque HCl rouge d em\u00e9thyl CaVa=CbVb I2 thiosulfate de sodium thiod\u00e8ne 2CIVI=CthioVthio CI=4.10-2 mol\/L … Continuer la lecture de Dosages courants<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1003","post","type-post","status-publish","format-standard","hentry","category-tp-et-calculs"],"_links":{"self":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts\/1003","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/comments?post=1003"}],"version-history":[{"count":3,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts\/1003\/revisions"}],"predecessor-version":[{"id":5060,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts\/1003\/revisions\/5060"}],"wp:attachment":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/media?parent=1003"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/categories?post=1003"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/tags?post=1003"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}