Jī-sng-hòa thòaⁿ-sò͘

Jī-sng-hòa thoàⁿ-sò͘ (二酸化炭素, hòa-ha̍k-sek: CO₂), sī chi̍t khoán hòa-ha̍p-bu̍t, sī 2-ê sng-sò͘ kiat 1-ê thòaⁿ-sò͘, in chi kan sī kiōng-iú (covalent) ê jī-tiông kiat-ha̍p (double bond).

Jī-sng-hòa thòaⁿ-sò͘

Ball-and-stick model of carbon dioxide Space-filling model of carbon dioxide
Hō-miâ
Kî-tha hō-miâ Carbonic acid gas Carbonic anhydride Carbonic oxide Carbon oxide Carbon(IV) oxide Dry ice (solid phase)
Sek-pia̍t-hō
CAS Number	124-38-9 Y
3D model (JSmol)	Interactive image Interactive image
3DMet	B01131
Beilstein Reference	1900390
ChEBI	CHEBI:16526 Y
ChEMBL	ChEMBL1231871 N
ChemSpider	274 Y
ECHA InfoCard	100.004.271
EC Number	204-696-9
E number	E290 (preservatives)
Gmelin Reference	989
KEGG	D00004 Y
MeSH	Carbon+dioxide
PubChem CID	280
RTECS number	FF6400000
UNII	142M471B3J Y
UN number	1013 (gas), 1845 (solid)
InChI InChI=1S/CO2/c2-1-3 Y Key: CURLTUGMZLYLDI-UHFFFAOYSA-N Y InChI=1/CO2/c2-1-3 Key: CURLTUGMZLYLDI-UHFFFAOYAO
SMILES O=C=O C(=O)=O
Sèng-chit
Hòa-ha̍k-sek	CO2
Mole chit-liōng	44.01 g·mol−1
Gōa-māu	Bû-sek khì-thé
Khì-bī	Kē lông-tō͘: bô Koân lông-tō͘: lāi; sng[1]
Bi̍t-tō͘	1562 kg/m3 (1 atm kiam −78.5 °C ê sî kò͘-thé) 1101 kg/m3 (pá-hô −37°C ê sî e̍k-thé) 1.977 kg/m3 (1 atm kiam 0 °C ê sî khì-thé)
Iûⁿ-tiám	−56.6 °C; −69.8 °F; 216.6 K (Sam-têng-tiám tī 5.1 atm)
Sublimation conditions	−78.5 °C; −109.2 °F; 194.7 K (1 atm)
Tī chúi ê iûⁿ-kái-tō͘	1.45 g/L at 25 °C (77 °F), 100 kPa
Cheng-khì-ap	5.73 MPa (20 °C)
Acidity (pKa)	6.35, 10.33
Chû-hòa-lu̍t (χ)	−20.5·10−6 cm3/mol
Khut-chiat-lu̍t (nD)	1.00045
Viscosity	0.07 cP at −78.5 °C
Dipole moment	0 D
Kò͘-chō
Kiat-chiⁿ kò͘-chō	trigonal
Molecular shape	linear
Jia̍t-hòa-ha̍k
Heat capacity (C)	37.135 J/K mol
Piau-chún mole entropy (So298)	214 J·mol−1·K−1
Piau-chún hêng-sêng enthalpy (ΔfHo298)	−393.5 kJ·mol−1
Io̍h-lí-ha̍k
ATC code	V03AN02 (WHO)
Gûi-hiám
An-choân chu-liāu-toaⁿ	Sigma-Aldrich
NFPA 704	[2][3] 0 2 0 SA
Lethal dose or concentration (LD, LC):
LCLo (lowest published)	90,000 ppm (human, 5 min)[4]
Bí-kok kiān-hong pī-pha̍k chè-hān (NIOSH):
PEL (Ē-thong-kòe)	TWA 5000 ppm (9000 mg/m3)[5]
REL (Chhui-chiàn)	TWA 5000 ppm (9000 mg/m3) ST 30,000 ppm (54,000 mg/m3)[5]
IDLH (Chek-sî gûi-hiám)	40,000 ppm[5]
Koan-liân hòa-ha̍p-bu̍t
Kî-tha im-lî-chú	Jī-liû-hòa thòaⁿ-sò͘ Jī-selenium-hòa thòaⁿ-sò͘ Jī-tellurium-hòa thòaⁿ-sò͘
Kî-tha iông-lî-chú	Jī-sng-hòa ke-sò͘ Jī-sng-hòa germanium Jī-sng-hòa siah Jī-sng-hòa iân
Related thòaⁿ-sò͘ sng-hòa-bu̍t	It-sng-hòa thòaⁿ-sò͘ A-sng-hòa thòaⁿ-sò͘ It-sng-hòa Jī-thòaⁿ-sò͘ Sam-sng-hòa thòaⁿ-sò͘
Koan-liân hòa-ha̍p-bu̍t	Thòaⁿ-sng Liû-hòa carbonyl
Tû-liáu te̍k-pia̍t chí chhut, chu-liāu sī kun-kù bu̍t-chit ê piau-chún chōng-thài (tī 25 °C [77 °F], 100 kPa).
N cha-chèng (YN sī siáⁿ ?)
Infobox chham-chiàu

Chit chióng hòa-ha̍p-bu̍t bô bī bô sek-tī, jî-chhiáⁿ tùi Tē-kiû sèⁿ-miā ū pit-iàu-sèng. I tī Tē-kiû tāi-khì tiong ê bi̍t-tō͘ tāi-khài sī 400 ppm.

Jī-sng-hòa thòaⁿ-sò͘ ê chū-jiân lâi-goân ū hóe-soaⁿ, un-chôaⁿ téng-téng, goân-lí sī in-ūi thòaⁿ-sng-iâm (carbonate) iûⁿ-kái tī chúi kap sng--nih.

Bu̍t-lí sèng-chit

Jī-sng-hòa thòaⁿ-sò͘ sī bû-sek--ê. Tī kē lông-tō͘ ê sî khì-thé sī bû-khì-bī--ê; chóng-sī, tī chhiong-chiok ê koân lông-tō͘ chōng-hóng, ē chhut ē-lāi--ê, sng-sèng ê khì-bī.^[1] Tī phiau-chún ap-le̍k kap ūn-tōng, jī-sng-hòa thòaⁿ-sò͘ ê bi̍t-tō͘ sī iok-lio̍k 1.98 kg/m³, chha-put-to khong-khì ê 1.67 pōe.