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ID number:616275
 
Evaluation:
Published: 29.04.2019.
Language: Latvian
Level: Elementary school
Literature: 3 units
References: Not used
Extract

Alumīnija iegūšana elektrometalurģiskā procesā

Alumīnija iegūšana:
Kausējumā alumīnija oksīds Al O disociē:
Alumīnija ķīmiskās īpašības:
Maza cietība un mehāniskā izturība;
Piemīt stiepjamība, velmējamība un kaļamība.

Alumīnijs reaģē:
ar halogēniem
2Al + 3Cl2 → 2AlCl3
ar skābekli, sēru, slāpekli, oglekli
4Al + 3O2 → 2Al2O3
ar atšķaidītu sālsskābi un sērskābi
2Al + 3H2SO4 → Al2(SO4)3 + 3H2O
amalgamēts alumīnijs reaģē ar ūdeni
2Al + 6H2O→ 2Al(OH)3+ 3H2↑
ar sārmu šķīdumiem
2Al + 2NaOH + 6H2O → 2Na[Al(OH)4] + 3H2↑


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