Maida hankali mafita

Maida hankali mafita - wani ra'ayi quite na kowa biyu a cikin kimiyya da juyin juya halin, da kuma a cikin iyali lexicon - characterizes gwada yawa tsarin da abun da ke ciki na wani bayani. A daidai da matsayin da ma'anar IUPAC (International Registry na sinadaran mahadi) a maida hankali tana nufin nauyi rabo daga abu da kuma bayani. The ji wannan rabo aka yi a raka'a mole / L ko g / L.

Idan muka yi la'akari da wani abu, wanda rabo za a iya bayyana ta wannan irin dabi'u (msl, nauyi zuwa nauyi), su gani da rabo yarda lobes, amma a yi karin tartsatsi amfani ne ra'ayi samu natsuwa mafita.

Akwai da dama zažužžukan da wanda ya kasance daidai da mayar da hankali. Domin mafita fi amfani da magana a cikin bayani tsarin da taro da kuma juz'i na (domin taya) Kashi iya bayyana taro a moles, ya cigaba da, da maida hankali da mafita za a iya bayyana, a gram equivalents. A wasu lokuta, da yin amfani da taro na gani wani zaɓi via titer ko awo molarity.

Yawanci, da natsuwa daga cikin mafita wanda ba ya bukatar mai daidaici a ta magana, da nuna percentages da nauyi. Akwai, inda high daidaituwa, amfani da asu, titles, ko gram-equivalents.

Lokacin amfani da nauyi da kashi ya kamata a yi amfani da mulki, bisa ga abin da taro na magana nuna a cikin wannan raka'a, misali, da yawa grams na wani abu kunshe ne a cikin wani yawan grams na bayani. Ba za a iya hade a grams da tunani girma raka'a (misali: yawan grams na wani abu a cikin 100 milliliters na bayani).

Alal misali, idan muna bukatar mu bayyana abun da ke ciki na wani 10% bayani na sodium gishiri da dabara a cikinsa NaCl, to, shi ne don a fahimci haka da cewa 100 gram bayani qunshi 10 grams na gishiri da 90 g na ruwa. A wannan yanayin, idan maida hankali ne da aka ba a raka'a kashi nauyi abubuwa (msl, 25% bayani), da kuma bukatar yin amfani da wani adadin bayani da cewa shi ne daidai a kayyade adadin da wani abu (msl, 5 g), da mafita ya kamata a dauka don taro (a cikin wannan misali - shi ne 20 g).

Yana yana da dabara domin kowane bambance-bambancen taro gani. Saboda haka, idan yawan taro na bayani amfani, da dabara ne:

C = M1 / m, a cikinsa: M1 - taro na wani abu narkar da a cikin bayani da kuma bayyana a grams ko kilo, m - taro na bayani, aka bayyana a cikin wannan raka'a.

A matauni taro na fili a cikin bayani da aka ƙaddara da dabara: C (M) = n / V, inda n - adadin abu a moles, V - ƙarar na bayani a cikin lita. By ta amfani da gram-equivalents dabara daukan siffar: C (N) = z / V, inda V - juz'i na bayani, bayyana, a lita, z - yawan daidaitawa.

A lokuta inda aka sani da yawa daga cikin bayani ne mafi dace don wakiltar shi a juz'i. Amma wannan shi ne kawai idan ya zo ga fairly da mayar da hankali mafita (kasa da 1%), tun da kuskure a cikin wannan hali, zai iya zama kananan.

Bayyana, a moles na taro a molarity ake kira sunadarai. Idan ka ce, "matauni bayani", yana nufin cewa 1 lita na ruwa dauke 1 mole na wani abu. Irin wannan bayani da aka kira wani "matauni".

Idan taro da aka bayyana a matsayin yawan gram-equivalents, wanda aka dauke a cikin naúra girma na ruwa, a wannan yanayin, wani magana "normality", wanda ya nuna cewa, misali, a 1 lita na ruwa ne 1 gram m. Mafi sau da yawa, irin wannan bayani ne kawai ake kira al'ada.

A labarin da hulda da kawai wasu daga cikin manyan hanyoyin da bayyana taro. A wasu lokuta, a lokacin da ta je hadaddun mafita, da kuma sauran raka'a za a iya amfani da wannan manufa.