

{"id":5795,"date":"2023-08-24T22:08:02","date_gmt":"2023-08-25T03:08:02","guid":{"rendered":"https:\/\/ami.advancedrenaleducation.com\/wparep\/?post_type=article&#038;p=5795"},"modified":"2025-05-09T12:06:22","modified_gmt":"2025-05-09T17:06:22","slug":"equivalencia-electroquimica-sp","status":"publish","type":"article","link":"https:\/\/ami.advancedrenaleducation.com\/wparep\/article\/equivalencia-electroquimica-sp\/","title":{"rendered":"Equivalencia Electroqu\u00edmica"},"content":{"rendered":"<p>Las part\u00edculas con carga positiva se denominan cationes y las part\u00edculas con carga negativa se denominan aniones. Cuando los cationes y los aniones se combinan, lo hacen seg\u00fan su carga i\u00f3nica (o valencia) y no seg\u00fan su peso. La equivalencia electroqu\u00edmica se refiere al poder de combinaci\u00f3n de un ion.<\/p>\n<p>Un equivalente (Eq) se define como el peso en gramos de un elemento que se combina con o reemplaza 1 g de ion hidr\u00f3geno (H +). Dado que 1 g de H + es igual a 1 mol de H + (que contiene aproximadamente 6.02 x 1023 part\u00edculas), 1 mol de cualquier ani\u00f3n univalente (carga igual a 1-) se combinar\u00e1 con este H + y es igual a un equivalente (Eq). Por ejemplo,<\/p>\n<p style=\"text-align: center;\"><strong>1 mol H<sup>+<\/sup>\u00a0\u00a0 +\u00a0\u00a0\u00a0\u00a0 1 mol Cl<sup>&#8211; <\/sup>\u00a0\u00a0\u00a0\u2014&gt;\u00a0\u00a0\u00a0 1 mol HCl<\/strong><br \/>\n<strong>(1 g)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (35.5 g)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (36.5 g)<\/strong><\/p>\n<p>Con un razonamiento similar, 1 mol de un cati\u00f3n univalente (carga igual a 1+) tambi\u00e9n es igual a 1 Eq, ya que puede reemplazar H + y combinar con 1 Eq de Cl-. Por ejemplo,<\/p>\n<p style=\"text-align: center;\"><strong>1 mol Na<sup>+<\/sup>\u00a0\u00a0 +\u00a0\u00a0\u00a0\u00a0 1 mol Cl<sup>&#8211; <\/sup>\u00a0\u00a0\u00a0\u2014&gt;\u00a0\u00a0\u00a0 1 mol NaCl<br \/>\n(23 g)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (35.5 g)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (58.5 g)<\/strong><\/p>\n<p>Por el contrario, el calcio ionizado (Ca2 +) es un cati\u00f3n divalente (la carga es igual a 2+). En consecuencia, 1 mol de Ca2 + se combinar\u00e1 con 2 mol de Cl- y es igual a 2 Eq:<\/p>\n<p style=\"text-align: center;\"><strong>1 mol Ca<sup>2+<\/sup>\u00a0\u00a0 +\u00a0\u00a0\u00a0\u00a0 2 mol Cl-\u00a0\u00a0\u00a0 \u2014&gt;\u00a0\u00a0\u00a0 1 mol CaCl<sub>2<\/sub><\/strong><br \/>\n<strong>(40 g)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (71 g)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0(111 g)<\/strong><\/p>\n<p>Los fluidos corporales est\u00e1n relativamente diluidos y la mayor\u00eda de los iones est\u00e1n presentes en cantidades miliequivalentes (una mil\u00e9sima parte de 1 Eq equivale a 1 mEq). Para convertir de unidades de milimoles por litro a miliequivalentes por litro, se pueden utilizar las siguientes f\u00f3rmulas:<\/p>\n<p style=\"text-align: center;\"><strong>mEq\/L \u00a0 =\u00a0\u00a0 mmol\/L\u00a0 x\u00a0 valence<\/strong><\/p>\n<p style=\"text-align: center;\"><strong>mEq\/L \u00a0 =\u00a0\u00a0 (mg\/dL\u00a0 x\u00a0\u00a0 10\u00a0\u00a0 x\u00a0\u00a0 valence)\u00a0\u00a0 \u00f7\u00a0\u00a0 mol wt (g)<\/strong><\/p>\n<p>La medici\u00f3n de concentraciones i\u00f3nicas en miliequivalentes por litro enfatiza el principio de que los iones combinan miliequivalentes por miliequivalentes, no milimol por milimol o miligramo por miligramo. Tambi\u00e9n destaca la electroneutralidad. Hay un n\u00famero igual de miliequivalentes de cationes y aniones en los fluidos corporales. La necesidad de preservar la electroneutralidad es un determinante importante del transporte de iones en el ri\u00f1\u00f3n y del movimiento de iones entre las c\u00e9lulas y el l\u00edquido extracelular. Esta relaci\u00f3n obligatoria no podr\u00eda apreciarse si las concentraciones i\u00f3nicas se midieran en milimoles por litro o en miligramos por decilitro.<\/p>\n<p>Cabe se\u00f1alar que no todos los iones se pueden medir f\u00e1cilmente en miliequivalentes por litro. La concentraci\u00f3n total de calcio (Ca<sup>2+<\/sup>) en la sangre es de aproximadamente 10 mg\/dL<\/p>\n<p style=\"text-align: center;\"><strong>mEq\/L of Ca<sup>2+\u00a0 <\/sup>\u00a0\u00a0=\u00a0 \u00a0 \u00a0 (10 mg\/dL\u00a0 x\u00a0\u00a0 10\u00a0 x\u00a0 2) \u00a0\u00f7\u00a0\u00a0 40 g\u00a0 \u00a0=\u00a0\u00a0 5 mEq\/L<\/strong><\/p>\n<p>Sin embargo, aproximadamente del 50 al 55 por ciento del Ca<sup>2 + <\/sup>plasm\u00e1tico se une a la alb\u00famina y, en mucho menor grado, al citrato, de modo que la concentraci\u00f3n de Ca<sup>2 + <\/sup>ionizado (o no unido) fisiol\u00f3gicamente importante es s\u00f3lo de 2,0 a 2,5 mEq \/ L.<\/p>\n<p>Existe un problema diferente con el fosfato, ya que puede existir en diferentes formas i\u00f3nicas, como H<sub>2<\/sub>PO<sub>4<\/sub><sup>-o<\/sup> como HPO<sub>4<\/sub> (<sup>2-<\/sup>) o como PO<sub>4<\/sub> (<sup>3-<\/sup>), y no se puede dar una valencia exacta. Podemos estimar una valencia aproximada de menos 1.8 porque aproximadamente el 80 por ciento del fosfato extracelular existe como HPO<sub>4<\/sub> (<sup>2-<\/sup>) y el 20 por ciento como H<sub>2<\/sub>PO<sub>4<\/sub>-. Si la concentraci\u00f3n de f\u00f3sforo s\u00e9rico normal es de 3,5 mg \/ dl (el fosfato en la sangre se mide como f\u00f3sforo inorg\u00e1nico), entonces,<\/p>\n<p style=\"text-align: center;\"><strong>mEq\/L de fosfato \u00a0 \u00a0=\u00a0 \u00a0 (3.5 mg\/dL\u00a0\u00a0 x\u00a0\u00a0 10\u00a0 x\u00a0 1.8) \u00a0\u00f7\u00a0\u00a0 31 g\u00a0 \u00a0 = \u00a0\u00a0\u00a02 mEq\/L<\/strong><\/p>\n<p>Se aplican problemas similares a otros elementos que ocurren en m\u00e1s de un estado de valencia en fluidos fisiol\u00f3gicos.<\/p>\n<p>&nbsp;<\/p>\n<p>P\/N 101821-01S Rev B 02\/2023<\/p>\n<div class=\"vcex-spacing\" style=\"height:30px\"><\/div>\n","protected":false},"featured_media":0,"template":"","format":"standard","meta":{"_acf_changed":false},"categories":[274],"tags":[222],"language":[42],"articles":[231],"class_list":["post-5795","article","type-article","status-publish","format-standard","hentry","category-articulos","tag-numbers-sp","language-spanish","articles-erc-ert","entry","no-media"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Equivalencia Electroqu\u00edmica - Advanced Renal Education Program<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ami.advancedrenaleducation.com\/wparep\/article\/equivalencia-electroquimica-sp\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Equivalencia Electroqu\u00edmica - Advanced Renal Education Program\" \/>\n<meta property=\"og:description\" content=\"Las part\u00edculas con carga positiva se denominan cationes y las part\u00edculas con carga negativa se denominan aniones. 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