{"id":6307,"date":"2016-01-24T03:50:57","date_gmt":"2016-01-24T01:50:57","guid":{"rendered":"http:\/\/www.ilkkimbuldu.com\/?p=6307"},"modified":"2017-01-03T19:58:52","modified_gmt":"2017-01-03T17:58:52","slug":"baryumu-kim-buldu-kim-kesfetti","status":"publish","type":"post","link":"https:\/\/www.ilkkimbuldu.com\/?p=6307","title":{"rendered":"Baryumu kim buldu, kim ke\u015ffetti"},"content":{"rendered":"

Baryum<\/b> atom numaras\u0131 56, sembol\u00fc Ba olan kimyasal bir elementtir. Baryum bir toprak alkali metalidir.\u00a0Baryum element halinde beyaz-gri metalik rengindedir fakat y\u00fcksek reaktivitelikten dolay\u0131 element halinde bulunmaz. Baryum’un hemen hemen b\u00fct\u00fcn bile\u015fikleri ise zehirlidir.\u00a0Baryum ilk defa 1774 y\u0131l\u0131nda \u0130sve\u00e7li kimyac\u0131 Carl Wilhelm Sheele taraf\u0131ndan tan\u0131mlanm\u0131\u015ft\u0131r.<\/p>\n

Baryum’u kim ke\u015ffetti<\/h2>\n

Carl Wilhelm Scheele<\/b> (9 Aral\u0131k 1742-21 May\u0131s 1786), \u0130sve\u00e7 as\u0131ll\u0131 Alman eczac\u0131 ve kimyagerdir. 9 Aral\u0131k 1742’de Bat\u0131 Pomeranya’n\u0131n Stralsund \u015fehrinde do\u011fmu\u015ftur.<\/p>\n

Isaac Asimov, ona ke\u015fifleri y\u00fcz\u00fcnden “\u015eanl\u0131 Scheele” demi\u015ftir. Oksijen, molibden, tungsten, baryum, hidrojen ve kloru \u00a0<\/strong>gibi elementlerin ka\u015fifidir. Hatta gliserol<\/strong>, tartarik, oksalik, \u00fcrik, laktik asit, hidroflorik, siyaneziyan ve arsenik asitleri <\/strong>ve hidrojen siyanit<\/strong> gibi \u00e7e\u015fitli kimyasallar\u0131 bulmu\u015ftur.<\/p>\n

Oksijeni<\/strong> ke\u015ffetti\u011fi halde yay\u0131mlama hatas\u0131 y\u00fcz\u00fcnden Joseph Priestley<\/strong> bu ke\u015ffi kendine mal etmi\u015ftir. Lavoisier<\/strong> ise oksijenin ate\u015fin kayna\u011f\u0131 oldu\u011funu yan\u0131c\u0131 bir element oldu\u011funu bu y\u00fczden ke\u015ffin kendisine ithaf edilmesini istemi\u015fti. Ayr\u0131ca buldu\u011fu klor<\/strong> elementini tam olarak anlayamamas\u0131 y\u00fcz\u00fcnden bu ke\u015ffini de Humphry Davy<\/strong> \u00fcstlenmi\u015ftir. \u00d6l\u00fcm\u00fc ile ilgili iddia buldu\u011fu siyan\u00fcr\u00fcn tad\u0131na bakmas\u0131d\u0131r.<\/p>\n

Baryum ilk defa 1774 y\u0131l\u0131nda \u0130sve\u00e7li kimyac\u0131 Carl Wilhelm Sheele taraf\u0131ndan tan\u0131mlanm\u0131\u015ft\u0131r.<\/p>\n

Humphry Davy ve Baryum<\/h2>\n

1807’de s\u0131rayla; erimi\u015f k\u00fclden elektrik ak\u0131m\u0131 ge\u00e7irdi ve bu yolla \u00f6nce potasyum ad\u0131n\u0131 verdi\u011fi elementi, sonra da sodadan sodyum elementini ay\u0131rmay\u0131 ba\u015fard\u0131 ertesi y\u0131l da baryum, stronsiyum ve kalsiyumu\u00a0elektroliz yoluyla ayr\u0131\u015ft\u0131rm\u0131\u015ft\u0131r.<\/p>\n

Baryum element halinde beyaz-gri metalik rengindedir fakat y\u00fcksek reaktivitelikten dolay\u0131 element halinde bulunmaz. Baryum’un hemen hemen b\u00fct\u00fcn bile\u015fikleri ise zehirlidir. Metalik Ba yak\u0131ld\u0131\u011f\u0131nda elma ye\u015fili bir renk verir. Metalik halde saklanmas\u0131 \u00e7ok zordur. Aktif bir element oldu\u011fu i\u00e7in su, hava ve asitlerle kolayca reaksiyon verir. Toprak alkali grup i\u00e7erisinde do\u011fada en yayg\u0131n bulunan element Kalsiyum(Ca)dur. Bu s\u0131n\u0131ftaki metallerin \u00f6zellikleri birbirine benzemesine kar\u015f\u0131n bilhassa Kalsiyum, Stronsiyum, Baryum di\u011ferlerinden ayr\u0131l\u0131r. Bu \u00fc\u00e7 element adi derecede suyu ayr\u0131\u015ft\u0131rarak Hidrojen a\u00e7\u0131\u011fa \u00e7\u0131kar\u0131r ve Hidroksit(OH) olu\u015ftururlar. Bu Hidroksitler de \u0131s\u0131t\u0131ld\u0131\u011f\u0131nda su kaybederek Oksit haline d\u00f6nmektedirler. Karbonatlar\u0131 \u0131s\u0131 kar\u015f\u0131s\u0131nda kolay ayr\u0131\u015fmas\u0131na kar\u015f\u0131n Baryum Karbonat (BaCO3<\/sub>) en zor ayr\u0131\u015fan\u0131d\u0131r. S\u00fclfatlar\u0131 suda hemen hemen hi\u00e7 erimez.<\/p>\n

En s\u0131k bulunan ve en \u00e7ok kullan\u0131lan Baryum kayna\u011f\u0131 Barit madenidir. Do\u011fada sedimanter (tortul, \u00e7\u00f6kelme ile) meydana gelmi\u015f olarak bulunur. Denizlerin ya da sular\u0131n ta\u015f\u0131mas\u0131yla tabakalar meydana gelmi\u015ftir. Genellikle s\u0131cak su \u00e7\u0131kan b\u00f6lgelerede g\u00f6r\u00fcl\u00fcr. Kur\u015fun, G\u00fcm\u00fc\u015f, \u00c7inko \u00fcretiminde kullan\u0131l\u0131r. Kullan\u0131m alanlar\u0131ndan birisi de fren balatalar\u0131n\u0131n altl\u0131k malzemesidir.<\/p>\n

BaSO4<\/sub><\/b>: Zehirlidir. Radyoopak (Gama ve X \u0131\u015f\u0131n\u0131) \u00f6zelli\u011fe haiz oldu\u011fundan t\u0131pta kanser te\u015fhislerinde, k\u00e2\u011f\u0131t kaplamalarda, boya sanayiinde, plastik, tekstil, m\u00fcrekkep, kau\u00e7uk, batarya ve pil yap\u0131m\u0131nda kullan\u0131l\u0131r.<\/p>\n

BaCO3<\/sub><\/b>: Zehirlidir. \u00d6zel camlar\u0131n yap\u0131m\u0131nda, Klor ve NaOH \u00fcretiminde kullan\u0131l\u0131r.<\/p>\n

BaO<\/b>: Solventlerden suyun uzakla\u015ft\u0131r\u0131lmas\u0131nda ve petrol sanayinde kullan\u0131l\u0131r.<\/p>\n

BaNO3<\/sub><\/b>: Havai fi\u015feklerde, s\u0131\u00e7an zehirlerinde, seramik s\u0131rlarda kullan\u0131lmaktad\u0131r.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Baryum atom numaras\u0131 56, sembol\u00fc Ba olan kimyasal bir elementtir. Baryum bir toprak alkali metalidir.\u00a0Baryum element halinde beyaz-gri metalik rengindedir fakat y\u00fcksek reaktivitelikten dolay\u0131 element halinde bulunmaz. Baryum’un hemen hemen…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[92],"tags":[2681,2680,1417],"class_list":["post-6307","post","type-post","status-publish","format-standard","hentry","category-bilim","tag-baryum","tag-carl-wilhelm-scheele","tag-humphry-davy"],"_links":{"self":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/6307"}],"collection":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6307"}],"version-history":[{"count":2,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/6307\/revisions"}],"predecessor-version":[{"id":7990,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/6307\/revisions\/7990"}],"wp:attachment":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}