Magnesium oxide: Properties, Nkwadebe, ngwa

Magnesium oxide na-akpọkarị ndị ọzọ nanị nsure Magnesia ma ọ bụ magnesium oxide. A ihe onwunwe bụ fechaa na ezi crystalline ọcha ntụ ntụ. Na ọdịdị, na magnesium oxide emee ka ịnweta periclase. Nri ụlọ ọrụ bụ a umi a maara dị ka a nri mmako n'okpuru code E530.

Njirimara nke magnesium oxide

Chemical Formula nke umi: MgO. Nke a compound nwere fọrọ nke nta ọ bụla isi na amonia na acid bụ ngwa ngwa soluble n'ime mmiri, ya solubility na 30 ° C bụ naanị 0,0086 grams / 100 ml, na mmanya na ọ na-adịghị igbari. Ezengwenri uka nke MgO - 40,3044 g / mol. Na 20 ° C na ya njupụta bụ 3,58 g / cm³, esi okpomọkụ - 3600 ° C,-agbaze - 2852 Celsius C. Melkokristallichesky magnesium oxide bụ na ya nnọọ gara gara. Ọ bụ ike nke na-adọrọ carbon dioxide na-etolite kwekọrọ ekwekọ carbonate:

• MgO + CO ₂ = MgCO _3;

albeit ji nwayọọ nwayọọ na, ma ka mkpatụ na mmiri, akpụ unyi anaghị agbasa na -adịghị ike isi :

• H ₂ O + MgO = mg (OH) _2;

na-emeghachi omume na ihe acid:

• 2HCl + MgO = MgCl ₂ + H ₂ O

The calcined magnesium oxide tụfuru ya reactivity. Ọ kwesịkwara-ahụ kwukwara na a ntụ ntụ gigroskopechen.

Nkwadebe nke magnesium oxide

Na ụlọ ọrụ, a compound a kwadebere nnoo site firing. The ngwaọrụ eji minerals dị ka dolomite (MgCO3.CaCO3) ma ọ bụ Magnesia (MgCO3). Ke adianade do, Magnesia a rụrụ iji a calcination bishofit (MgCl ₂ x 6H ₂ O) na mmiri vepo, calcining mg (OH) 2 na ndị ọzọ na-ejighị n'aka na okpomọkụ mg ogige. N'okpuru laabu ọnọdụ, MgO nwere ike kwadebere site mmeghachi omume nke ya constituent mmiri:

• 2Mg + O ₂ = 2MgO;

ma ọ bụ site thermal decomposition nke ụfọdụ salts ma ọ bụ hydroxide:

• MgCO ₃ = MgO + CO _2.

Dabere na mmepụta usoro nke magnesium oxide bụ omenala dị iche isi ihe abụọ na ụdị nke ogige: ìhè na arọ Magnesia. Nke mbụ bụ a colorless ntụ ntụ, nke na-adị mfe iji na-abanye dị iche iche mmeghachi omume na itughari asịd, adịru mg salts na-guzobere. The abụọ mejupụtara nnukwu kristal nke eke ma ọ bụ sịntetik periclase na-akwanyere ùgwù mmiri na-eguzogide ma na-ọzọ inert.

magnesium oxide

Na ụlọ ọrụ, a compound na-eji maka n'ichepụta ciment, refractory, dị ka dịanyā na roba na ịnweta mmanụ ọgwụgwọ. Ultralight magnesium oxide eji dị ka nnọọ mma abrasive, nke e ọcha n'elu. Karịsịa, ọ na-eji ngwá electronic ụlọ ọrụ. Ke adianade do, Magnesia na ọtụtụ-eji nkà mmụta ọgwụ. Ebe MgO na-eji mebiri nke gastric acidity larịị aa ruru otu ngafe nke hydrochloric acid. Magnesium oxide nwekwara-maka iche-arụ ọrụ bekee mmadụ na mberede na-ejide ke afo. Na nri ụlọ ọrụ MgO eji dị ka nri mmako (E530) koodu, nke na-egbochi clumping na caking. Magnesia a na-eji na jimnazum. Ebe a, na ntụ ntụ na-etinyere aka nke na-eme egwuregwu na-kpọtụrụ na mmega akụrụngwa bụ ihe a pụrụ ịdabere na. Tinye na magnesium oxide bụ onye zuru ngosiputa. The echiche ọnụọgụ nke umi ke agbatiri spektral gbalaga bụ hà ịdị n'otu na Ya mere o nwere ike mee ka a na-acha ọcha akwụkwọ.