what is the sulphic acid
Answers
Answer:
Sulfuric acid, sulfuric also spelled sulphuric (H2SO4), also called oil of vitriol, or hydrogen sulfate, dense, colourless, oily, corrosive liquid; one of the most commercially important of all chemicals. ... In one of its most familiar applications, sulfuric acid serves as the electrolyte in lead–acid storage batteries.
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Answer:
Sulfuric acid (American spelling) or sulphuric acid (British spelling), also known as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with molecular formula H2SO4. It is a colourless, odourless, and viscous liquid that is soluble in water and is synthesized in reactions that are highly exothermic.[6]
Sulfuric acid
Sulfuric-acid-Givan-et-al-1999-3D-vdW.png
Space-filling model
Sulfuric-acid-Givan-et-al-1999-3D-balls.png
Ball-and-stick model length = 142.2 pm,
S-O bond length = 157.4 pm,
O-H bond length = 97 pm
Sulphuric acid 96 percent extra pure.jpg
Names
IUPAC name
Sulfuric acid
Other names
Oil of vitriol
Hydrogen sulfate
Identifiers
CAS Number
7664-93-9 ☑
3D model (JSmol)
Interactive image
ChEBI
CHEBI:26836 ☑
ChEMBL
ChEMBL572964 ☑
ChemSpider
1086 ☑
ECHA InfoCard
100.028.763
EC Number
231-639-5
E number
E513 (acidity regulators, ...)
Gmelin Reference
2122
KEGG
D05963 ☑
PubChem CID
1118
RTECS number
WS5600000
UNII
O40UQP6WCF ☑
UN number
1830
CompTox Dashboard (EPA)
DTXSID5029683 Edit this at Wikidata
InChI
InChI=1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4) ☑
Key: QAOWNCQODCNURD-UHFFFAOYSA-N ☑
InChI=1/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)
Key: QAOWNCQODCNURD-UHFFFAOYAC
SMILES
OS(=O)(=O)O
Properties
Chemical formula
H
2SO
4
Molar mass
98.079 g/mol
Appearance
Clear, colorless liquid
Odor
Odorless
Density
1.8302 g/cm3, liquid[1]
Melting point
10.31[1] °C (50.56 °F; 283.46 K)
Boiling point
337[1] °C (639 °F; 610 K) When sulfuric acid is above 300 °C (572 °F; 573 K), it gradually decomposes to SO3 + H2O
Solubility in water
miscible, exothermic
Vapor pressure
0.001 mmHg (20 °C)[2]
Acidity (pKa)
-2.8±0.5[3], 1.99
Conjugate base
Hydrogen sulfate
Viscosity
26.7 cP (20 °C)
Thermochemistry
Std molar
entropy (So298)
157 J·mol−1·K−1[4]
Std enthalpy of
formation (ΔfH⦵298)
−814 kJ·mol−1[4]
Hazards
Safety data sheet
External MSDS
GHS pictograms
GHS05: Corrosive
GHS Signal word
Danger
GHS hazard statements
H314
GHS precautionary statements
P260, P264, P280, P301+330+331, P303+361+353, P363, P304+340, P305+351+338, P310, P321, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamond
032W
OX
Flash point
Non-flammable
Threshold limit value (TLV)
15 mg/m3 (IDLH), 1 mg/m3 (TWA), 2 mg/m3 (STEL)
Lethal dose or concentration (LD, LC):
LD50 (median dose)
2140 mg/kg (rat, oral)[5]
LC50 (median concentration)
50 mg/m3 (guinea pig, 8 hr)
510 mg/m3 (rat, 2 hr)
320 mg/m3 (mouse, 2 hr)
18 mg/m3 (guinea pig)[5]
LCLo (lowest published)
87 mg/m3 (guinea pig, 2.75 hr)[5]
NIOSH (US health exposure limits):
PEL (Permissible)
TWA 1 mg/m3[2]
REL (Recommended)
TWA 1 mg/m3[2]
IDLH (Immediate danger)
15 mg/m3[2]