(Class-12, Chems
Answer the following (Any one)
1) Write balanced chemical eqvations for the action of
i) Phosphorus trichloride on propan-2-on
ii) Methyl bromide on silver propanoate.
Answers
Answer:
Phosphorus trichloride is a chemical compound of phosphorus and chlorine, having the chemical formula PCl3. It has a trigonal pyramidal shape. It is the most important of the three phosphorus chlorides. It is an important industrial chemical, being used for the manufacture of organophosphorus compounds for a wide variety of applications. It has a 31P NMR signal at around +220 ppm with reference to a phosphoric acid standard.
Phosphorus trichloride
Phosphorus trichloride
Phosphorus trichloride
Phosphorus trichloride 25ml.jpg
Names
IUPAC name
Phosphorus trichloride
Other names
Phosphorus(III) chloride
Phosphorous chloride
Identifiers
CAS Number
7719-12-2 ☑
3D model (JSmol)
Interactive image
ChEBI
CHEBI:30334 ☑
ChemSpider
22798 ☑
ECHA InfoCard
100.028.864
EC Number
231-749-3
PubChem CID
24387
RTECS number
TH3675000
UNII
M97C0A6S8U ☒
UN number
1809
CompTox Dashboard (EPA)
DTXSID5029687 Edit this at Wikidata
InChI
InChI=1S/Cl3P/c1-4(2)3 ☑
Key: FAIAAWCVCHQXDN-UHFFFAOYSA-N ☑
SMILES
ClP(Cl)Cl
Properties
Chemical formula
PCl3
Molar mass
137.33 g/mol
Appearance
Colorless to yellow fuming liquid[1]
Odor
like hydrochloric acid[1]
Density
1.574 g/cm3
Melting point
−93.6 °C (−136.5 °F; 179.6 K)
Boiling point
76.1 °C (169.0 °F; 349.2 K)
Solubility in water
hydrolysis
Solubility in other solvents
soluble[vague] in benzene, CS2, ether, chloroform, CCl4, halogenated organic solvents
reacts with ethanol
Vapor pressure
13.3 kPa
Magnetic susceptibility (χ)
−63.4·10−6 cm3/mol
Refractive index (nD)
1.5122 (21 °C)
Viscosity
0.65 cP (0 °C)
0.438 cP (50 °C)
Dipole moment
0.97 D
Thermochemistry
Std enthalpy of
formation (ΔfH⦵298)
−319.7 kJ/mol
Hazards
Safety data sheet
See: data page
ICSC 0696
EU classification (DSD) (outdated)
Very Toxic T+Harmful XnCorrosive C
R-phrases (outdated)
R14-R26/28-R35-R48/20
S-phrases (outdated)
(S1/2)-S7/8-S26-S36/37/39-S45
NFPA 704
NFPA 704 four-colored diamond
042W
Lethal dose or concentration (LD, LC):
LD50 (median dose)
18 mg/kg (rat, oral)[2]
LC50 (median concentration)
104 ppm (rat, 4 hr)
50 ppm (guinea pig, 4 hr)[2]
US health exposure limits (NIOSH):
PEL (Permissible)
TWA 0.5 ppm (3 mg/m3)[1]
REL (Recommended)
TWA 0.2 ppm (1.5 mg/m3) ST 0.5 ppm (3 mg/m3)[1]
IDLH (Immediate danger)
25 ppm[1]