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Which substance forms when carbon dioxide dissolves in

Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro ISBN: 9780321809247 1

Solution for problem 10SAQ Chapter 22

Chemistry: A Molecular Approach | 3rd Edition

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Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro

Chemistry: A Molecular Approach | 3rd Edition

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Problem 10SAQ

Which substance forms when carbon dioxide dissolves in water?

a) CO

b) H2CO

c) CH4 

d) H2CO3

Step-by-Step Solution:
Step 1 of 3

Solution 10SAQ:Ans. (d)Step-1When carbon dioxide reacts with water, a weak acid is formed i.e carbonic acid (H CO ) 2 3CO +2 O 2 CO 2 3Step-2 (mechanism) CO i2a linear molecule with 2 electronegative oxygen atoms withdrawing electron densityfrom the central C atom. This makes it an electrophile, it wants some nucleophile to come in andattack it. The oxygen in water is a decent nucleophile. It’s got two lone pairs. So water comes inwith one of its lone pairs and attacks the central carbon atom in CO , kicking two electrons2f acarbon-oxygen pi bond up onto an oxygen, giving it a negative charge i.e H O (+) and COO(-). 2

Step 2 of 3

Chapter 22, Problem 10SAQ is Solved
Step 3 of 3

Textbook: Chemistry: A Molecular Approach
Edition: 3
Author: Nivaldo J. Tro
ISBN: 9780321809247

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Which substance forms when carbon dioxide dissolves in