Bambance-bambance Tsakanin Potassium Hydroxide da Sodium Hydroxide

A fannin kimiyya, duka biyu Hydroxide na potassium (KOH) da sodium hydroxide (NaOH), wanda aka fi sani da caustic potash da caustic soda bi da bi, suna taka muhimmiyar rawa. Duk da raba wasu kamanceceniya a matsayin tushe masu ƙarfi, suna da halaye daban-daban waɗanda suka bambanta su ta fuskoki daban-daban. Wannan labarin yana nufin samar da cikakken bayyani na bambance-bambance tsakanin potassium hydroxide da sodium hydroxide.

Chemical da Properties Properties

Tsarin Kwayoyin Halitta da Haɗuwa

Potassium hydroxide ya ƙunshi zarra guda ɗaya na potassium (K), zarra ɗaya oxygen (O), da zarra guda ɗaya (H), tare da tsarin sinadarai KOH. Sodium hydroxide, a gefe guda, ya ƙunshi zarra guda ɗaya na sodium (Na), atom ɗin oxygen ɗaya, da atom ɗin hydrogen guda ɗaya, wanda aka bayyana a matsayin NaOH. Bambanci a cikin cation karfe (potassium vs. sodium) yana da mahimmanci kuma yana ba da gudummawa ga yawancin kaddarorin su.

Bayyanar Jiki da Solubility

Dukansu mahadi fari ne, daskararrun hygroscopic a dakin da zafin jiki, suna ɗaukar danshi daga iska. Duk da haka, suna nuna bambance-bambance a cikin solubility. Potassium hydroxide yana narkewa sosai a cikin ruwa, yana fitar da zafi mai yawa yayin narkewa, wanda zai iya haifar da maganin ya zama zafi sosai. Hakanan yana narkewa a cikin ethanol da methanol. Sodium hydroxide daidai yake mai narkewa a cikin ruwa, tare da sanannen halayen exothermic. Amma a kwatanci, potassium hydroxide gabaɗaya yana da mafi girma na narkewa a cikin wasu kaushi na halitta, yana mai da shi zaɓin da aka fi so a wasu ƙwararrun hanyoyin sinadarai.

Narkewa Da Tafasa

Potassium hydroxide yana da wurin narkewa kamar 360 ° C (680 °F) kuma yana tafasa a kusan 1.324 ° C (2.415 ° F). Sodium hydroxide, akasin haka, yana da wurin narkewar ɗan ƙaramin sama da kusan 318 ° C (604 ° F) kuma yana tafasa a 1.388 ° C (2.530 ° F). Wadannan bambance-bambance a cikin narkewa da wuraren tafasa na iya yin tasiri ga amfani da su a cikin aikace-aikacen zafin jiki mai zafi, tare da kowane an zaɓa bisa ƙayyadaddun buƙatun zafin jiki na tsari.

Hanyoyin Shiri

Samar da Masana'antu na Potassium Hydroxide

A masana'antu, ana samar da potassium hydroxide musamman ta hanyar electrolysis na maganin potassium chloride (KCl), wani tsari da aka sani da tsarin chloralkali. A cikin wannan hanyar, wutar lantarki tana wucewa ta hanyar maganin potassium chloride a cikin kwayar halitta. A anode, chloride ions suna oxidized don samar da iskar chlorine, yayin da a cathode, ruwa ya ragu, yana samar da iskar hydrogen da ions hydroxide. Abubuwan ions na potassium suna haɗuwa tare da ions hydroxide don samar da potassium hydroxide.

Samar da Masana'antu na Sodium Hydroxide

Sodium hydroxide kuma ana samar da shi ta hanyar tsarin chloralkali, amma ta amfani da sodium chloride (NaCl) azaman kayan farawa. Kamar samar da potassium hydroxide, electrolysis na sodium chloride bayani yana haifar da samuwar sodium hydroxide a cathode, tare da samar da iskar chlorine a anode da hydrogen gas a cathode. Babban bambanci a cikin shirye-shiryen ya ta'allaka ne a cikin kayan da ake amfani da su, tare da samar da potassium hydroxide wanda ya dogara da potassium - mai dauke da gishiri da samar da sodium hydroxide akan sodium - mai dauke da gishiri.

Aikace-aikace

A cikin Masana'antar Kimiyya

A masana'antar sinadarai, ana amfani da potassium hydroxide sosai wajen samar da sinadarai masu tushen potassium kamar potassium phosphates, wadanda suke da muhimmanci takin zamani. Hakanan ana amfani da shi a cikin haɗin wasu polymers kuma a matsayin mai haɓakawa a cikin wasu halayen halitta. Sodium hydroxide kuwa, wani muhimmin sinadari ne wajen samar da sabulu da wanki. Ta hanyar tsari da ake kira saponification, yana amsawa da mai da mai don samar da kwayoyin sabulu da glycerol. Bugu da ƙari, ana amfani da shi wajen kera takarda, inda yake taimakawa wajen aikin bugun jini don rushe lignin, yana raba zaruruwan cellulose don samar da takarda.

A cikin Electroplating da Metal Processing

Potassium hydroxide yana samun aikace-aikace a cikin wanka na lantarki, musamman don sanya wasu karafa kamar zinc. Da ikon narkar da karfe oxides da kuma kula da wani alkaline yanayi yana da amfani ga cimma santsi da kuma uniform shafi karfe. Ana amfani da sodium hydroxide a cikin tsaftacewa na ƙarfe da kuma matakan jiyya na ƙasa. Yana iya cire mai, mai, da tsatsa daga saman ƙarfe, yana shirya su don ƙarin sarrafawa kamar fenti ko plating.

A cikin Kayan Abinci da Masu Amfani

Potassium hydroxide yana da iyaka amma takamaiman amfani a masana'antar abinci. Misali, ana iya amfani da shi wajen samar da koko don daidaita pH, yana shafar dandano da launi na samfurin ƙarshe. Hakanan ana amfani dashi a cikin samar da pretzels masu laushi don ƙirƙirar halayen tauna. Sodium hydroxide, ana amfani da shi wajen sarrafa zaitun don kawar da dacinsu. Hakanan ana amfani dashi a cikin samar da wasu abinci - masu kauri da kuma stabilizers.

Aminci da Kulawa

Dukansu potassium hydroxide da sodium hydroxide abubuwa ne masu lalacewa sosai. Suna iya haifar da ƙonewa mai tsanani ga fata, idanu, da kuma hanyoyin numfashi yayin haɗuwa. Lokacin sarrafa waɗannan sinadarai, dole ne a sa kayan kariya masu dacewa (PPE) kamar safar hannu, tabarau, da riguna na lab. Idan ana hulɗa da fata ko idanu, nan da nan da tsawaita ruwa tare da ruwa mai yawa yana da mahimmanci. Duk da haka, saboda bambance-bambance a cikin reactivity da solubility, yanayin haɗarin haɗari na iya bambanta kaɗan. Misali, mafi girman narkewar potassium hydroxide a wasu kaushi yana nufin yana iya yaduwa cikin sauri a wasu wurare, yana ƙara haɗarin fallasa haɗari a wasu lokuta.

A ƙarshe, yayin da potassium hydroxide da sodium hydroxide ke raba yanayin gama gari na kasancewa tushe mai ƙarfi, bambance-bambancen su a cikin sinadarai da kaddarorin jiki, hanyoyin shirye-shirye, aikace-aikace, da la'akarin aminci sun sa su dace da dalilai daban-daban. Fahimtar waɗannan bambance-bambance yana da mahimmanci ga masanan, injiniyoyi, da ma'aikatan masana'antu don amfani da waɗannan sinadarai yadda ya kamata kuma cikin aminci a cikin aikace-aikace da yawa.