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Magazine Chapter 2: Q. 2.63 (page 88)
Classify each compound as a Lewis base, a Br酶nsted -Lowry base, both or neither.
a.
b.
c.
d.
Short Answer
a. This compound is a Lewis base and a Br酶nsted Lowry base.
b. This compound is a Lewis base and a Br酶nsted Lowry base.
c. This compound is neither a Lewis base nor a Br酶nsted Lowry base.
d. This compound is both a Lewis base and a Br酶nsted Lowry base.
Step by step solution
Lewis base
Lewis bases are compounds that can contribute to their electron pairs.These species comprise of lone pair of electrons or a pi bond.
Brønsted Lowry base
Br酶nsted Lowry bases are species that can obtain protons from other species. A compound can be regarded as a Br酶nsted Lowry base if it contains a lone pair or a pi bond.
Identifying the compounds as Lewis bases or Brønsted Lowry bases
a. This compound is a Lewis base and a Br酶nsted Lowry base as they contain lone pair of electrons on the oxygen atom.
Compound a
b. The lone pair of electrons are present on Cl in this compound. Hence, this compound is a Lewis base and a Br酶nsted Lowry base.
Compound b
c. This compound does not contain lone pair of electrons or a pi bond. Hence, this compound is neither a Lewis base nor a Br酶nsted Lowry base.
Compound c
d. This compound contains pi bonds. Hence, this compound is both a Lewis base and a Br酶nsted Lowry base.
Compound d
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