All the following act as a Lewis acid in water except NO2 Li2O ...
All the following act as a Lewis acid in water except
NO2
Li2O
BCl3
Pb4+
At what molarity will 0.100 M Ca2+ begin to precipitate out of a
solution of Na2CO3?(Ksp of CaCO3=4.5x10-9)
4.5x10-9M Na2CO3
4.5x10-8M Na2CO3
2.0x10-17M Na2CO3
2.6x10-9M Na2CO
Homework Answers
1. Any species which can donate a lone pair of electrons is a lewis acid.
NO2 can donate a lone pair because it has several lone pairs on the oxygen atoms.
Li2O also has 2 lone pairs on the oxygen atom.
BCl3 also has a total of 9 lone pairs on 3 Cl atoms.
Pb4+ has no lone pairs and hence can't work as a lewis acid.
So, the correct answer is Pb4+.
Please post each question separately.
Comment if any problem.
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