Oxid lanthanitý

Oxid lanthanitý
Obecné
Systematický názevOxid lanthanitý
Anglický názevLanthanum(III) oxide
Německý názevLanthanoxid
Sumární vzorecLa2O3
Vzhledbílá práškovitá látka
Identifikace
Registrační číslo CAS1312-81-8
Číslo RTECSOE5330000
Vlastnosti
Molární hmotnost325,809 g/mol
Teplota tání2 320 °C
Teplota varu4 200 °C (přibližně)
Hustota6,51 g/cm3 (15 °C)
Rozpustnost ve vodě0,000 4 g/100 ml (20 °C)
Rozpustnost v polárních
rozpouštědlech		roztoky silných kyselin
roztoky amonných solí
Měrná magnetická susceptibilita−3,007×10−6 cm3g−1
Struktura
Krystalová strukturašesterečná (α)
krychlová (β)
Hrana krystalové mřížkyα-modifikace
a= 394,5 pm
c= 615,1 pm
β-modifikace
a= 1 140 pm
Termodynamické vlastnosti
Standardní slučovací entalpie ΔHf°−1 793,1 kJ/mol
Entalpie tání ΔHt230 J/g
Standardní molární entropie S°128,4 JK−1mol−1
Standardní slučovací Gibbsova energie ΔGf°−1 705,8 kJ/mol
Izobarické měrné teplo cp0,331 3 JK−1g−1
Bezpečnost
GHS07 – dráždivé látky
GHS07
GHS09 – látky nebezpečné pro životní prostředí
GHS09
[1]
Varování[1]
R-větyR36/37
S-větyS26 S22 S37/39
NFPA 704
0
1
1
Není-li uvedeno jinak, jsou použity
jednotky SI a STP (25 °C, 100 kPa).
Některá data mohou pocházet z datové položky.

Oxid lanthanitý je oxidem lanthanu, ve kterém je lanthan v oxidačním stavu III.

Reference

  1. ↑ a b Lanthanum(III) oxide. pubchem.ncbi.nlm.nih.gov [online]. PubChem [cit. 2021-05-23]. Dostupné online. (anglicky) 

Literatura

  • VOHLÍDAL, Jiří; ŠTULÍK, Karel; JULÁK, Alois. Chemické a analytické tabulky. 1. vyd. Praha: Grada Publishing, 1999. ISBN 80-7169-855-5. 

Externí odkazy

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Oxidy s prvkem v oxidačním čísle III.
Oxid hlinitý (Al2O3) • Oxid antimonitý (Sb2O3) • Oxid arsenitý (As2O3) • Oxid bismutitý (Bi2O3) • Oxid boritý (B2O3) • Oxid ceritý (Ce2O3) • Oxid chromitý (Cr2O3) • Oxid dusitý (N2O3) • Oxid erbitý (Er2O3) • Oxid gadolinitý (Gd2O3) • Oxid gallitý (Ga2O3) • Oxid holmitý (Ho2O3) • Oxid inditý (In2O3) • Oxid železitý (Fe2O3) • Oxid lanthanitý (La2O3) • Oxid lutecitý (Lu2O3) • Oxid měditý (Cu2O3) • Oxid niklitý (Ni2O3) • Oxid fosforitý (P4O6) • Oxid promethitý (Pm2O3) • Oxid rhoditý (Rh2O3) • Oxid samaritý (Sm2O3) • Oxid skanditý (Sc2O3) • Oxid stříbrno-stříbřitý (AgO2) • Oxid stříbřitý (Ag2O3) • Oxid terbitý (Tb2O3) • Oxid thallitý (Tl2O3) • Oxid thulitý (Tm2O3) • Oxid titanitý (Ti2O3) • Oxid wolframitý (W2O3) • Oxid vanaditý (V2O3) • Oxid ytterbitý (Yb2O3) • Oxid yttritý (Y2O3) • Oxid zlatitý (Au2O3) • Oxid chloritý (Cl2O3) • Oxid americitý (Am2O3)
Anorganické soli lanthanité
Halogenidy a pseudohalogenidy
Soli kyslíkatých kyselin

(neuvedeny soli
se záměnou kyslíku za jiný prvek,

složené a „zásadité“)
Soli tvořené záměnou vodíku
ze sloučenin typu prvekx – vodíky

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