is density of h2o2 is greater than h20
Answers
Hydrogen Peroxide (H2O2) is a colourless liquid that resembles water in many respects. Its physical properties are very similar to those of water, except that it is 40% denser.
Answer:
Hydrogen peroxide
Language
Watch
Edit
Hydrogen peroxide is a chemical compound with the formula H
2O
2. In its pure form, it is a very pale blue[5] liquid, slightly more viscous than water. It is used as an oxidizer, bleaching agent, and antiseptic. Concentrated hydrogen peroxide, or "high-test peroxide", is a reactive oxygen species and has been used as a propellant in rocketry.[6] Its chemistry is dominated by the nature of its unstable peroxide bond.
Hydrogen peroxide
Structural formula of hydrogen peroxide
space filling model of the hydrogen peroxide molecule
Names
IUPAC name
Hydrogen peroxide
Other names
Dioxidane
Oxidanyl
Perhydroxic acid
0-hydroxyol
Dihydrogen dioxide
Oxygenated water
Peroxaan
Identifiers
CAS Number
7722-84-1 check
3D model (JSmol)
Interactive image
ChEBI
CHEBI:16240 check
ChEMBL
ChEMBL71595 check
ChemSpider
763 check
ECHA InfoCard
100.028.878 Edit this at Wikidata
EC Number
231-765-0
IUPHAR/BPS
2448
KEGG
D00008 check
PubChem CID
784
RTECS number
MX0900000 (>90% soln.)
MX0887000 (>30% soln.)
UNII
BBX060AN9V check
UN number
2015 (>60% soln.)
2014 (20–60% soln.)
2984 (8–20% soln.)
CompTox Dashboard (EPA)
DTXSID2020715 Edit this at Wikidata
InChI
InChI=1S/H2O2/c1-2/h1-2H check
Key: MHAJPDPJQMAIIY-UHFFFAOYSA-N check
InChI=1/H2O2/c1-2/h1-2H
Key: MHAJPDPJQMAIIY-UHFFFAOYAL
SMILES
OO
Properties
Chemical formula
H2O2
Molar mass
34.0147 g/mol
Appearance
Very light blue color; colorless in solution
Odor
slightly sharp
Density
1.11 g/cm3 (20 °C, 30% (w/w) solution )[1]
1.450 g/cm3 (20 °C, pure)
Melting point
−0.43 °C (31.23 °F; 272.72 K)
Boiling point
150.2 °C (302.4 °F; 423.3 K) (decomposes)
Solubility in water
Miscible
Solubility
soluble in ether, alcohol
insoluble in petroleum ether
log P
-0.43[2]
Vapor pressure
5 mmHg (30 °C)[3]
Acidity (pKa)
11.75
Magnetic susceptibility (χ)
−17.7·10−6 cm3/mol
Refractive index (nD)
1.4061
Viscosity
1.245 cP (20 °C)
Dipole moment
2.26 D
Thermochemistry
Heat capacity (C)
1.267 J/(g·K) (gas)
2.619 J/(g·K) (liquid)
Std enthalpy of
formation (ΔfH⦵298)
−187.80 kJ/mol
Pharmacology
ATC code
A01AB02 (WHO) D08AX01 (WHO), D11AX25 (WHO), S02AA06 (WHO)
Hazards
Safety data sheet
ICSC 0164 (>60% soln.)
GHS pictograms
GHS03: OxidizingGHS05: CorrosiveGHS07: Harmful
GHS Signal word
Danger
GHS hazard statements
H271, H302, H314, H332, H335, H412
GHS precautionary statements
P280, P305+351+338, P310
NFPA 704 (fire diamond)
NFPA 704 four-colored diamond
033OX
Flash point
Non-flammable
Lethal dose or concentration (LD, LC):
LD50 (median dose)
1518 mg/kg[citation needed]
2000 mg/kg (oral, mouse)[4]
LC50 (median concentration)
1418 ppm (rat, 4 hr)[4]
LCLo (lowest published)
227 ppm (mouse)[4]
NIOSH (US health exposure limits):
PEL (Permissible)
TWA 1 ppm (1.4 mg/m3)[3]
REL (Recommended)
TWA 1 ppm (1.4 mg/m3)[3]
IDLH (Immediate danger)
75 ppm[3]
Related compounds
Related compounds
Water
Ozone
Hydrazine
Hydrogen disulfide
Dioxygen difluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
check verify (what is check☒ ?)
Infobox references
Hydrogen peroxide is the simplest peroxide (a compound with an oxygen–oxygen single bond). It is unstable and slowly decomposes in the presence of light. Because of its instability, hydrogen peroxide is typically stored with a stabilizer in a weakly acidic solution in a dark colored bottle. Hydrogen peroxide is found in biological systems including the human body. Enzymes that use or decompose hydrogen peroxide are classified as peroxidases.