{"id":4661,"date":"2015-10-05T00:01:52","date_gmt":"2015-10-05T03:01:52","guid":{"rendered":"http:\/\/quiprocura.net\/w\/?p=4661"},"modified":"2017-04-04T08:41:31","modified_gmt":"2017-04-04T11:41:31","slug":"nitrogenio-aplicacoes","status":"publish","type":"post","link":"https:\/\/quiprocura.net\/w\/2015\/10\/05\/nitrogenio-aplicacoes\/","title":{"rendered":"Nitrog\u00eanio &#8211; Aplica\u00e7\u00f5es"},"content":{"rendered":"<div  class='avia-builder-widget-area clearfix  avia-builder-el-0  el_before_av_image  avia-builder-el-first '><div id=\"text-35\" class=\"widget clearfix widget_text\">\t\t\t<div class=\"textwidget\"><h3>QuiProcura Qu\u00edmica<\/h3>\n<p><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-5517334625230773\"\n     crossorigin=\"anonymous\"><\/script><br \/>\n<!-- anuncio superior --><br \/>\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:728px;height:90px\"\n     data-ad-client=\"ca-pub-5517334625230773\"\n     data-ad-slot=\"3817602043\"><\/ins><br \/>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/p>\n<\/div>\n\t\t<\/div><\/div>\n<div  class='avia-image-container  av-styling-    avia-builder-el-1  el_after_av_sidebar  el_before_av_social_share  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img class='wp-image-4662 avia-img-lazy-loading-not-4662 avia_image' src='https:\/\/quiprocura.net\/w\/wp-content\/uploads\/2015\/10\/peixe-nitrogenio-quiprocura.jpg' alt='' title='peixe nitrogenio - quiprocura' height=\"292\" width=\"840\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div>\n<div  class='av-social-sharing-box  avia-builder-el-2  el_after_av_image  el_before_av_two_third  av-social-sharing-box-minimal '><div class='av-share-box'><ul class='av-share-box-list noLightbox'><li class='av-share-link av-social-link-facebook' ><a target=\"_blank\" aria-label=\"Share on Facebook\" href='https:\/\/www.facebook.com\/sharer.php?u=https:\/\/quiprocura.net\/w\/2015\/10\/05\/nitrogenio-aplicacoes\/&#038;t=Nitrog%C3%AAnio%20%E2%80%93%20Aplica%C3%A7%C3%B5es' aria-hidden='false' data-av_icon='\ue8f3' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on Facebook' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on Facebook<\/span><\/a><\/li><li class='av-share-link av-social-link-twitter' ><a target=\"_blank\" aria-label=\"Share on Twitter\" href='https:\/\/twitter.com\/share?text=Nitrog%C3%AAnio%20%E2%80%93%20Aplica%C3%A7%C3%B5es&#038;url=https:\/\/quiprocura.net\/w\/?p=4661' aria-hidden='false' data-av_icon='\ue8f1' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on Twitter' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on Twitter<\/span><\/a><\/li><li class='av-share-link av-social-link-whatsapp' ><a target=\"_blank\" aria-label=\"Share on WhatsApp\" href='https:\/\/api.whatsapp.com\/send?text=https:\/\/quiprocura.net\/w\/2015\/10\/05\/nitrogenio-aplicacoes\/' aria-hidden='false' data-av_icon='\uf232' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on WhatsApp' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on WhatsApp<\/span><\/a><\/li><li class='av-share-link av-social-link-tumblr' ><a target=\"_blank\" aria-label=\"Share on Tumblr\" href='https:\/\/www.tumblr.com\/share\/link?url=https%3A%2F%2Fquiprocura.net%2Fw%2F2015%2F10%2F05%2Fnitrogenio-aplicacoes%2F&#038;name=Nitrog%C3%AAnio%20%E2%80%93%20Aplica%C3%A7%C3%B5es&#038;description=' aria-hidden='false' data-av_icon='\ue8fa' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on Tumblr' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on Tumblr<\/span><\/a><\/li><li class='av-share-link av-social-link-mail' ><a  aria-label=\"Share by Mail\" href='mailto:?subject=Nitrog%C3%AAnio%20%E2%80%93%20Aplica%C3%A7%C3%B5es&#038;body=https:\/\/quiprocura.net\/w\/2015\/10\/05\/nitrogenio-aplicacoes\/' aria-hidden='false' data-av_icon='\ue805' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share by Mail'><span class='avia_hidden_link_text'>Share by Mail<\/span><\/a><\/li><\/ul><\/div><\/div>\n<div class=\"flex_column av_two_third  flex_column_div av-zero-column-padding first  avia-builder-el-3  el_after_av_social_share  el_before_av_one_third  \" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><h1>Aplica\u00e7\u00f5es do Nitrog\u00eanio (N2)<\/h1>\n<p><strong>Nitrog\u00eanio<\/strong> \u00e9 um elemento representativo, que se encontra no 15\u00b0 grupo da tabela peri\u00f3dica (Fam\u00edlia 5\u00aa). O <strong>nitrog\u00eanio<\/strong> possui n\u00famero at\u00f4mico igual a 7, massa molar 14,01g\/mol e s\u00edmbolo qu\u00edmico \u201cN\u201d. Nitrog\u00eanio tamb\u00e9m \u00e9 o nome dado para o composto mais simples do elemento, o <strong>g\u00e1s nitrog\u00eanio<\/strong> (<strong>N\u00ad<sub>2<\/sub><\/strong>), que \u00e9 bastante abundante na atmosfera terrestre (estima-se que aproximadamente 70% dos gases da atmosfera sejam N<sub>2<\/sub>). O <strong>g\u00e1s nitrog\u00eanio <\/strong>\u00e9 um inerte a temperatura ambiente, mas reage com o <a href=\"http:\/\/quiprocura.net\/w\/portfolio-item\/oxigenio-e-ar\/\" target=\"_blank\">g\u00e1s oxig\u00eanio (O<sub>2<\/sub>) presente na atmosfera<\/a>, em elevadas temperaturas (como nas c\u00e2maras de combust\u00e3o de motores automotivos e auto fornos industriais), formando os \u00f3xidos de nitrog\u00eanio (NOx \u2013 NO, NO<sub>2 <\/sub>e N<sub>2<\/sub>O<sub>5<\/sub>). Os \u00f3xidos de nitrog\u00eanio quando reagem com \u00e1gua podem dar origem ao \u00e1cido n\u00edtrico (HNO<sub>3<\/sub>), um dos principais constituintes da chuva \u00e1cida.<\/p>\n<p><em><u>Em temperaturas elevadas<\/u><\/em>:<\/p>\n<p>N<sub>2<\/sub>(g)\u00a0 +\u00a0 O<sub>2<\/sub>(g) \u00a0&#8211;&gt; \u00a02NO(g)<\/p>\n<p>2NO(g) + O<sub>2<\/sub>(g) \u00a0&#8211;&gt; \u00a02NO<sub>2<\/sub>(g)<\/p>\n<p>2NO<sub>2<\/sub>(g)\u00a0 +\u00a0 H<sub>2<\/sub>O(l) \u00a0&#8211;&gt; \u00a0HNO<sub>3<\/sub>(aq)\u00a0 +\u00a0 HNO<sub>2<\/sub>(aq)<\/p>\n<p>Os autom\u00f3veis modernos possuem sistemas catal\u00edticos de exaust\u00e3o de gases, que possuem metais como platina e r\u00f3dio que promovem a convers\u00e3o dos \u00f3xidos de <strong>nitrog\u00eanio<\/strong> em gases inertes, como o N<sub>2<\/sub> e O<sub>2<\/sub>, evitando que os autom\u00f3veis poluam a atmosfera e promovam a chuva \u00e1cida.<\/p>\n<p>Normalmente, o \u00f3xido n\u00edtrico, NO<sub>2<\/sub>, \u00e9 um g\u00e1s com colora\u00e7\u00e3o marrom. Alguns especialistas afirmam que a colora\u00e7\u00e3o marrom na atmosfera que os grandes centros urbanos ou regi\u00f5es com queimada possuem \u00e9 devido a grande concentra\u00e7\u00e3o de NO<sub>2<\/sub> e tamb\u00e9m materiais particulados dispersos.<\/p>\n<p>N\u00e3o \u00e9 poss\u00edvel encontrar <strong>nitrog\u00eanio<\/strong> elementar (N) na natureza, normalmente apenas em compostos. Embora o g\u00e1s nitrog\u00eanio seja bastante abundante na atmosfera, o nitrog\u00eanio \u00e9 pouco presente na crosta terrestre, na forma de minerais (os principais s\u00e3o os nitratos).<\/p>\n<p>O principal composto de <strong>nitrog\u00eanio<\/strong> \u00e9, sem d\u00favidas, a am\u00f4nia (NH<sub>3<\/sub>), g\u00e1s utilizado na ind\u00fastria para produzir \u00e1cido n\u00edtrico, ureia, aminas, amidas e sais como nitritos, nitratos e amon\u00edaco. Al\u00e9m disso, a am\u00f4nia \u00e9 um g\u00e1s bastante usado como g\u00e1s refrigerante, para obter baixas temperaturas na ind\u00fastria.<\/p>\n<p>O \u00e1cido n\u00edtrico (HNO<sub>3<\/sub>) \u00e9 tamb\u00e9m um importante composto industrial derivado do nitrog\u00eanio. A partir do \u00e1cido n\u00edtrico \u00e9 poss\u00edvel fabricar nitratos org\u00e2nicos e inorg\u00e2nicos, usados principalmente como explosivos. O NH<sub>4<\/sub>NO<sub>3<\/sub>, a nitroglicerina, a nitrocelulose, o trinitrotolueno e a ciclotrimetilenotrinitramina s\u00e3o os principais compostos utilizados como explosivos. O \u00e1cido n\u00edtrico tamb\u00e9m pode ser utilizado como reagente para s\u00edntese de compostos org\u00e2nicos utilizados como corantes e fragr\u00e2ncias.<\/p>\n<p>Na ind\u00fastria, o \u00e1cido n\u00edtrico pode ser utilizado como reagente importante para corroer metais, seja para purifica\u00e7\u00e3o ou para grava\u00e7\u00e3o em metais. Al\u00e9m disso, o \u00e1cido n\u00edtrico em solu\u00e7\u00e3o aquosa \u00e9 usado como solu\u00e7\u00e3o para galvanoplastia, <a href=\"http:\/\/quiprocura.net\/w\/2015\/06\/28\/eletroquimica\/\" target=\"_blank\">processo eletroqu\u00edmico<\/a> para tratamento de metais ou solu\u00e7\u00f5es de \u00edons met\u00e1licos.<\/p>\n<p>O \u00e1cido n\u00edtrico tamb\u00e9m \u00e9 utilizado como reagente para produzir tecidos sint\u00e9ticos como o nylon, seda artificial e rayon. O processo de produ\u00e7\u00e3o do couro tamb\u00e9m envolve o uso de \u00e1cido n\u00edtrico, assim como a produ\u00e7\u00e3o de borracha vulcanizada.<\/p>\n<p>O nitrato de pot\u00e1ssio (KNO<sub>3<\/sub> &#8211; salitre) tamb\u00e9m \u00e9 usado como um dos componentes da p\u00f3lvora, que tamb\u00e9m cont\u00e9m <a href=\"http:\/\/quiprocura.net\/w\/2017\/03\/22\/enxofre-aplicacoes\/\" target=\"_blank\">enxofre<\/a> e carv\u00e3o.<\/p>\n<p>O N<sub>2<\/sub> tamb\u00e9m possui aplica\u00e7\u00e3o refrigerante, podendo atingir baix\u00edssimas temperaturas (192\u00b0C negativos). A principal forma de obter g\u00e1s N<sub>2<\/sub> \u00e9 atrav\u00e9s da liquefa\u00e7\u00e3o do ar atmosf\u00e9rico, que \u00e9 rico em N<sub>2<\/sub>.<\/p>\n<p>Al\u00e9m de aplica\u00e7\u00f5es industriais, os compostos de nitrog\u00eanio possuem grande import\u00e2ncia para a vida, seja animal ou vegetal. A maioria dos seres vivos n\u00e3o \u00e9 capaz de absorver nitrog\u00eanio diretamente da atmosfera, na forma de N<sub>2<\/sub>, sendo necess\u00e1ria a transforma\u00e7\u00e3o em nitratos ou nitritos. Normalmente, bact\u00e9rias fixadoras fazem essa transforma\u00e7\u00e3o. H\u00e1 tamb\u00e9m bact\u00e9rias capazes de transformarem nitratos em g\u00e1s nitrog\u00eanio, essas bact\u00e9rias s\u00e3o conhecidas como desnitrificantes. Para saber mais sobre essas transforma\u00e7\u00f5es dos compostos de nitrog\u00eanio, veja sobre <a href=\"https:\/\/pt.wikipedia.org\/wiki\/Ciclo_do_nitrog%C3%AAnio\" target=\"_blank\" rel=\"nofollow noopener\">ciclo do nitrog\u00eanio<\/a>.<\/p>\n<p>Os vegetais absorvem o nitrog\u00eanio na forma de nitratos e transformam em compostos como <a href=\"http:\/\/quiprocura.net\/w\/2015\/07\/01\/proteinas-o-que-sao\/\" target=\"_blank\">amino\u00e1cidos, constituintes fundamentais das prote\u00ednas<\/a>.<\/p>\n<p><b>Escrito por:<\/b> <a href=\"http:\/\/quiprocura.net\/w\/author\/miguel-medeiros\/\" target=\"_blank\">Miguel A. Medeiros<\/a><br \/>\n<b><\/b><strong>Publicado em<\/strong>: 05 de outubro de 2015<\/p>\n<\/div><\/section><\/div><div class=\"flex_column av_one_third  flex_column_div av-zero-column-padding   avia-builder-el-5  el_after_av_two_third  avia-builder-el-last  \" style='border-radius:0px; '><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":5640,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320,443],"tags":[191,192,216,506,537,11],"class_list":["post-4661","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-curiosidades-quimicas-na-web","category-elementos-quimicos","tag-aplicacao","tag-elemento","tag-elementos-quimicos","tag-ensino-medio","tag-nitrogenio","tag-quimica"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nitrog\u00eanio - Aplica\u00e7\u00f5es - QuiProcura<\/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:\/\/quiprocura.net\/w\/2015\/10\/05\/nitrogenio-aplicacoes\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nitrog\u00eanio - Aplica\u00e7\u00f5es - QuiProcura\" \/>\n<meta property=\"og:url\" content=\"https:\/\/quiprocura.net\/w\/2015\/10\/05\/nitrogenio-aplicacoes\/\" \/>\n<meta property=\"og:site_name\" content=\"QuiProcura\" \/>\n<meta property=\"article:published_time\" content=\"2015-10-05T03:01:52+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2017-04-04T11:41:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/quiprocura.net\/w\/wp-content\/uploads\/2015\/10\/peixe-nitrogenio-quiprocura.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"840\" \/>\n\t<meta property=\"og:image:height\" content=\"292\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Miguel\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Miguel\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/quiprocura.net\/w\/2015\/10\/05\/nitrogenio-aplicacoes\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/quiprocura.net\/w\/2015\/10\/05\/nitrogenio-aplicacoes\/\"},\"author\":{\"name\":\"Miguel\",\"@id\":\"https:\/\/quiprocura.net\/w\/#\/schema\/person\/5f45798853889ca34a52bdd0208e9434\"},\"headline\":\"Nitrog\u00eanio &#8211; 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