Calcium hydroxide: Properties na Ngwa

Ca (OH) 2 - bụ calcium hydroxide (site na Latin Calcium hydroxide), ọ bụ nnọọ nkịtị chemical. Ọ bụ site na ya dị nnọọ ọdịdị a na-ewere a siri ike isi. Ọ na-anọchi anya melkokrupinchaty acha ntụ ntụ ma ọ colorless kristal. Ike na-amalite irekasị mgbe kpụ ọkụ n'ọnụ, ọ tọhapụrụ ka a n'ihi nke calcium oxide. Ọ bụ-agụghị oké soluble n'ime mmiri. Otu okenye ihe ngwọta nke calcium hydroxide na ha chemical Njirimara bụ nkezi ndabere. Na ọnụnọ nke ọla nwere ike hapụ hydrogen, nke a ghọtara site mgbawa gas.

Calcium hydroxide mgbe ahu site ingestion ma ọ bụ site na inhalation nke ihe aerosol nwere ike etinye obi gị dum n'ime anụ ahụ na-akpọkọtara ha na ha. Na nkịtị ụlọ okpomọkụ 20-22 degrees umi bụ n'ụzọ na-ikusi, ma ya ịgba ahụ nwere ike ịdị ize ndụ nye ahụ ike. Inweta na akpụkpọ, na akụkụ okuku ume na tract mucous membranes ma ọ bụ na anya, nke calcium hydroxide bụ iwe, ọbụna corrosive. Ruo ogologo oge na kọntaktị na anụ nwere ike ime ka dermatitis. O nwekwara ike na-emetụta akpa ume anụ ahụ na mgbe nile n'ebe calcium hydroxide ahụ.

Nke a chemical compound nwere ọtụtụ ihe na-enweghị aha, dị ka slaked wayo (ọ na-akwadebe site slaking calcium oxide na mmiri nkịtị) wayo mmiri (bụ a doro anya okenye ihe ngwọta). Ndị ọzọ na aha: pushonka (calcium hydroxide n'ụdị a akọrọ ntụ ntụ), na mmiri ara ehi nke wayo (jupụta okenye slurry). Ọtụtụ mgbe, ndị quicklime ma ọ bụ wayo na-ezo dị ka calcium oxide.

Calcium hydroxide, chemical Njirimara nke na-atụle ike ike na-akwanyere ndị ọzọ bekee, na-akwadebe site slaking ndị wayo, i.e., site na mmekọrịta (chemical mmeghachi omume) nke calcium oxide na mmiri. Schematically, mmeghachi omume bụ dị ka ndị:

CaO + H2O = Ca (OH) 2

Na nwetara okenye alkaline mmeghachi omume na-ajụ e ji mara. Dị ka ihe niile ahụkarị hydroxide, calcium hydroxide mkpatụ na:

1. inorganic asịd na-etolite calcium salts nke-ahụkarị

H2SO4 + Ca (OH) 2 = CaSO4 + 2H2O

2. The carbon dioxide nke na-etisasịwo na mmiri, otú ahụ ka okenye ihe ngwọta na-aghọ urukpuru ngwa ngwa na ikuku, akpụ a na-acha ọcha unyi anaghị agbasa na ịkpali - calcium carbonate

CO2 + Ca (OH) 2 = CaCO3 + H2O

3. The carbon monoxide site na ịba ụba nke okpomọkụ 400 degrees Celsius

CO (t Celsius) + Ca (OH) 2 = CaCO3 + H2

4. salts, nakwa n'ihi na-acha ọcha ịkpali - calcium sulfate

Na2SO3 + Ca (OH) 2 = CaSO3 + 2NaOH

Jiri nke calcium hydroxide bụ nnọọ ewu ewu. N'ezie, onye ọ bụla maara na lime emeso mgbidi ohere, na osisi kporo, nakwa dị ka ya iji dị ka a akụrụngwa nke ụlọ ngwa agha. The ojiji nke calcium hydroxide na-ewu a mara kemgbe oge ochie. Na ya ugbu mejupụtara gụnyere stucco na ya mepụtara lime brik na ihe, nke ikwọ nke nke bụ ihe fọrọ nke yiri na ngwa agha. Isi ihe dị iche bụ na usoro nke nkwadebe nke ndị a otu ihe ngwọta.

Calcium hydroxide na-eji nro ike mmiri, maka imewe nke bleach, lime inorganic fatịlaịza causticization nke sodium carbonate, na potassium. Ọzọkwa, a na umi bụ oké mkpa maka tanning na akwa ụlọ ọrụ, na nkwadebe dị iche iche ogige nke calcium nakwa dị ka neutralization nke acidic ngwọta na n'efu mmiri tinyere. On ya ndabere nke enwetara organic acid.

Calcium hydroxide hụrụ ya ngwa ke nri ụlọ ọrụ, ebe ọ na-mma a maara dị ka a nri mmako E526, na-eji dị ka ihe acidity regulator, thickener na hardener. Na sugar ụlọ ọrụ, ọ na-eji maka leaching nke molasses.

Na laabu nwere na ngosipụta lime mmiri dị oké mkpa egosi nchọpụta nke carbon dioxide na chemical Jeremaya mere. Mmiri ara ehi nke wayo emeso osisi na-alụ ọgụ ka ọrịa na pests.