Menene Dokar Kiyaye Mass?
Dokar Kare Kitse tana ɗaya daga cikin muhimman ra'ayoyi a fannin ilmin sunadarai da kimiyyar lissafi: ba za a iya ƙirƙirar taro ko lalata shi ba, amma kawai a canza tsari ko a canja shi daga wani abu zuwa wani. A wata ma'anar, a cikin wani tsari na rufewa na sinadarai, jimlar taro kafin amsawar zai daidaita jimlar taro bayan amsawar. Wannan ƙa'ida tana da sauƙi, amma tasirinta yana da zurfi - daga yadda masana kimiyya ke rubuta daidaiton sinadarai, zuwa lissafin buƙatun kayan aiki, zuwa fahimtar hanyoyin halitta da na masana'antu.
Fahimtar Dokar Kiyaye Mass
Gabaɗaya, wannan doka ta bayyana cewa:
> "A cikin wani sinadari, jimillar nauyin abubuwan da ke amsawa daidai yake da jimillar nauyin kayayyakin da ke amsawa, matuƙar babu wani taro da ya fita ko ya shiga tsarin."
Wannan yana nufin cewa idan ka auna sinadaran da ke cikin sinadaran (abun da ke cikin sinadaran kafin a samar da su) da kuma kayayyakin (abun da ke cikin sinadaran bayan an samar da su), to adadin zai yi daidai, matuƙar an yi lissafin dukkan sinadarai kuma babu wanda aka saki a cikin muhalli.
Misali mai sauƙi: idan ka yi maganin gram 10 na abu A da gram 5 na abu B a cikin akwati mai rufewa kuma ka samar da abu C, to nauyin abu C da aka samar (tare da wasu samfura idan akwai) dole ne ya kai gram 15.
Takaitaccen Tarihi: Daga Gwaji Zuwa Ka'idar Kimiyya
Dokar kiyaye kitse galibi ana danganta ta da masanin kimiyyar Faransa Antoine Laurent Lavoisier (1743–1794), wanda aka sani da "Uban Sinadarin Zamani." A ƙarni na 18, fahimtar konewa da halayen sinadarai har yanzu ba a fayyace su ba. Mutane da yawa sun yi imanin cewa idan wani abu ya ƙone, wasu daga cikin "al'amarin" sa kawai sun ɓace.
Lavoisier ya gudanar da gwaje-gwaje masu zurfi don auna abubuwa kafin da kuma bayan halayen, musamman a cikin tsarin rufewa. Ya nuna cewa a lokacin konewa, taro ba ya ɓacewa; maimakon haka, yana haɗuwa da wani ɓangare na iska (wanda daga baya aka sani da iskar oxygen). Kammalawar Lavoisier ta kafa harsashin haifar da ilimin sunadarai na zamani: ana iya fahimtar halayen sinadarai kuma a ƙididdige su ta hanyar adadi.
Me Yasa Tattaki Yake Kama Da "Bacewa" A Rayuwar Yau Da Kullum?
A cikin kwarewa ta yau da kullun, sau da yawa muna ɗaukar taro a matsayin ba "mai dorewa ba." Misali, idan aka ƙone itace, yana kama da yana raguwa sosai, yana barin ƙaramin adadin toka kawai. To, ina sauran taro zai tafi?
Amsar: Yawancin kayayyakin ƙona itace ana mayar da su zuwa iskar gas kamar carbon dioxide (CO₂), tururin ruwa (H₂O), da sauran iskar gas da ake fitarwa zuwa iska. Idan ƙonewar ta faru a cikin sarari a buɗe kuma ka auna tokar kawai, nauyinta zai yi kama da ƙarami. Duk da haka, idan an gudanar da aikin a cikin akwati a rufe kuma aka kama dukkan iskar gas ɗin aka auna, jimlar nauyin kafin da bayan ƙonewar zai kasance iri ɗaya.
Don haka, "rashin nauyi" yawanci shine kawai saboda ba a iya ganin dukkan samfuran amsawa ko kuma ba a auna su duka ba.
Misalan Aiwatar da Dokar Kare Masihu
1. Amsar Samuwar Ruwa
Hydrogen yana amsawa da iskar oxygen don samar da ruwa:
2H₂ + O₂ → 2H₂O
Idan gram 4 na hydrogen ya yi aiki gaba ɗaya da gram 32 na iskar oxygen, to ruwan da ya fito zai zama gram 36. Nauyin shine 4 + 32 = 36; babu abin da ya ɓace.
2. Amsar Ruwan Sama
Idan aka haɗa ruwan nitrate na azurfa da sodium chloride, wani abu mai kama da azurfa chloride zai fito:
AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq)
Idan aka auna dukkan tsarin (gami da maganin da kuma ruwan da ke taruwa), jimlar nauyin zai kasance iri ɗaya. Ruwan da ke taruwa ba "sabon nauyi" ba ne; ya fito ne daga haɗin ions da ke cikin ruwan da ke taruwa.
3. Martani da Iskar Gas a cikin Kwantena da Aka Rufe
Misali, amsawar vinegar (asam asetat) da kuma baking soda (sodium bicarbonate) suna samar da iskar CO₂:
CH₃COOH + NaHCO₃ → CH₃COONa + H₂O + CO₂
Idan aka yi aikin a cikin beaker ɗin da aka buɗe, nauyin maganin zai ragu saboda ana sakin CO₂ cikin iska. Duk da haka, idan an yi shi a cikin kwalbar da aka rufe da balan-balan don ɗaukar CO₂, jimlar nauyin (kwalba + balan-balan + abun ciki) zai kasance iri ɗaya.
Alaƙa da Daidaitowar Haɗakar Sinadarai
Dokar kiyaye taro ita ce babban dalilin da ya sa dole ne a daidaita daidaiton sinadarai. Idan muka daidaita martani, muna tabbatar da cewa adadin atom na kowane abu a gefen mai amsawa daidai yake da adadin atom a gefen samfurin. Tunda yawan atom ba ya ɓacewa, ana sake tsara atom ɗin kawai.
Misali, ya kamata a rubuta martanin samuwar ruwa kamar haka:
2H₂ + O₂ → 2H₂O
Idan an rubuta shi kamar H₂ + O₂ → H₂O, adadin atom ɗin iskar oxygen ba iri ɗaya bane (2 a hagu, 1 a dama). Wannan ya keta kiyaye taro a matakin atom.
Shin Dokar Kiyaye Mass Kullum Gaskiya Ce?
A fannin ilmin sunadarai na gargajiya da kuma yanayin yau da kullum, dokar kiyaye yawan jama'a tana aiki sosai. Duk da haka, a fannin kimiyyar lissafi na zamani, musamman a fannin nukiliya da kuma ma'aunin dangantaka, an fadada wannan ra'ayi.
A cikin halayen nukiliya, taro na iya canzawa zuwa makamashi ko akasin haka bisa ga lissafin Einstein:
E=m²
A cikin ruɓewar nukiliya ko haɗuwa/haɗakarwa, jimlar nauyin samfuran na iya zama ƙasa da nauyin masu amsawa kaɗan. Wannan bambancin taro yana bayyana a matsayin makamashin da aka saki. Duk da haka, idan muka yi la'akari da taro + makamashi gaba ɗaya, abin da ake "kiyayewa" da gaske shine jimlar kuzari (kiyaye makamashi), yayin da taro ba koyaushe yake daidai ba.
Duk da haka, ga kusan dukkan halayen sinadarai na yau da kullun, canjin nauyi sakamakon canza makamashi yana da ƙanƙanta sosai har za a iya yin watsi da shi. Saboda haka, a matakan ilimi na firamare da sakandare, dokar kiyaye taro ta kasance ƙa'ida mai inganci.
Fa'idodi da Matsayinsu a Rayuwa da Masana'antu
Dokar kiyaye al'ada ba wai kawai ka'idar littafi ba ce. Ana amfani da wannan ƙa'ida a fannoni da dama, ciki har da:
1. Stoichiometry a fannin sinadarai: ƙididdige adadin sinadaran da ake buƙata da kuma kayayyakin da aka samar.
2. Masana'antar sinadarai: tsara hanyoyin samarwa (misali takin zamani, magunguna, robobi) ta amfani da lissafin daidaiton taro.
3. Injiniyan muhalli: ƙididdige gurɓatattun abubuwa da ke shiga da fita daga tsarin, kamar maganin ruwan shara.
4. Kimiyyar abinci: hasashen canje-canje a cikin abun da ke cikin sinadaran yayin dumamawa, fermentation, ko bushewa.
5. Magani: tabbatar da cewa yawan maganin da abun da ke ciki sun yi daidai da ƙa'idodi.
A duniyar injiniyanci, wannan ra'ayi galibi ana kiransa ma'aunin taro: jimlar taro da ke shiga tsarin daidai yake da jimlar taro da ke barin tsarin ƙari/rage abin da aka adana a cikin tsarin (ya danganta da ko tsarin yana canzawa akan lokaci).
Kammalawa
Dokar Kare Kifi ta bayyana cewa ba za a iya ƙirƙirar kima ko lalata ta a cikin wani sinadari ba; yana canza tsari ne kawai kuma ana sake tsara shi. An nuna wannan ƙa'ida ta hanyar gwaji mai kyau, musamman ta Lavoisier, kuma muhimmin tushe ne na kimiyyar sinadarai na zamani. Kodayake ana iya canza kima zuwa makamashi a cikin halayen nukiliya , wannan doka ta kasance daidai kuma tana da amfani ga halayen sinadarai na yau da kullun.
Ta hanyar fahimtar dokar kiyaye taro, za mu iya fahimtar dalilin da yasa dole ne a daidaita lissafin amsawa, inda "bacewar taro" take tafiya, da kuma yadda sinadarai da masana'antu ke gudanar da lissafin samarwa daidai.
Idan kuna so, zan iya ƙara sigar "harshen makaranta" ta labarin (ƙaramin makarantar sakandare/makarantar sakandare) ko sigar kimiyya mai cike da misalai na tambayoyi da tattaunawa.
