Chemistry
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New answer posted
a year ago
Contributor-Level 9
Novolac is a linear polymer obtained from phenol and formaldehyde by condensation reaction.
[Structure of Novolac polymer]
New answer posted
a year agoContributor-Level 10
[MnCl? ]³?
Mn (25) → [Ar] 4s²3d?
Cl? → weak ligand
Mn³? → 3d? i.e. t? g³, eg¹
Hybridization → sp³d² and paramagnetic
New answer posted
a year agoContributor-Level 10
Compound Oxidation state of P
H? P? O? → 5
H? P? O? → 3
H? P? O? → 4
New answer posted
a year agoContributor-Level 9
Bauxite contains SiO?, TiO? & Fe?O? as impurities. SiO? being acidic is leached with NaOH as Na?SiO?.
Al?O? + 2NaOH → 2NaAlO? + H?O
SiO? + 2NaOH → Na?SiO? + H?O
New answer posted
a year agoContributor-Level 10
In Monoclinic crystal system, a ≠ b ≠ c and α = 90°, γ = 90° and β=120°.
New answer posted
a year ago
Contributor-Level 9
[Reaction of an α, β-unsaturated ketone with ethyl magnesium bromide (Grignard reagent) followed by hydrolysis to give a tertiary alcohol via 1,2-addition.]
New answer posted
a year ago
Contributor-Level 10
(a) Furacin → Antiseptic
(b) Arsphenamine → Antibiotic
(c) Dimetone → Synthetic antihistamines
(d) Valium → Tranquilizers
New answer posted
a year agoContributor-Level 9
[SiCl?]?² is not known because six larger chloride ions can't be accomodated around Si? due to its small size.
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