1) The name of acid and base used in aqueous solution that is used in the formation of following salts in formula equation has to be written 2) The balanced formula equation for each reaction has to be written Concept Introduction: When base and acid quantitatively react with each other, then the chemical reaction is called as neutralization reaction. In this type of reactions, there is no excess presence of hydrogen or hydroxide ion present in the solution. When molecules present on the reactant side are equal to the molecules present on the product side. Then the chemical equation is called as balanced chemical equation.

Question

The Concept of Aromaticity 21.15 State the number of 2p orbital electrons in each molecule or ion. (a) (b) (e) (f) (c) (d) (h) (i) DA (k) 21.16 Which of the molecules and ions given in Problem 21.15 are aromatic according to the Hückel criteria? Which, if planar, would be antiaromatic? 21.17 Which of the following structures are considered aromatic according to the Hückel criteria? ---0-0 (a) (b) (c) (d) (e) (h) H -H .8.0- 21.18 Which of the molecules and ions from Problem 21.17 have electrons donated by a heteroatom?

Answer 1

Question

Chapter 4, Problem 68E

Interpretation Introduction

Interpretation:

1) The name of acid and base used in aqueous solution that is used in the formation of following salts in formula equation has to be written

2) The balanced formula equation for each reaction has to be written

Concept Introduction: When base and acid quantitatively react with each other, then the chemical reaction is called as neutralization reaction. In this type of reactions, there is no excess presence of hydrogen or hydroxide ion present in the solution.

When molecules present on the reactant side are equal to the molecules present on the product side. Then the chemical equation is called as balanced chemical equation.

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The Concept of Aromaticity 21.15 State the number of 2p orbital electrons in each molecule or ion. (a) (b) (e) (f) (c) (d) (h) (i) DA (k) 21.16 Which of the molecules and ions given in Problem 21.15 are aromatic according to the Hückel criteria? Which, if planar, would be antiaromatic? 21.17 Which of the following structures are considered aromatic according to the Hückel criteria? ---0-0 (a) (b) (c) (d) (e) (h) H -H .8.0- 21.18 Which of the molecules and ions from Problem 21.17 have electrons donated by a heteroatom?

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