Question

ch3ch=ch2------>ch3chohch3...what is the reagent?
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Answer 1

Explanation:

CH3CHCH2+ H2O --> CH3CH(OH)CH3

Using Lewis Structures, here is what each product and reactant will look like:

CH3CHCH2

C-C=C, with 3 hydrogens bonded to the first C, one to the second C, and two to the third C (respectively, in order from left to right, and all single bonds).

H2O

H-O-H

CH3CH(OH)CH3

C-C-C, with 3 hydrogens bonded to the first C, one hydrogen to the second, and 3 to the third C (respectively, in order from left to right, and all single bonds). Also attached to the second C in the sequence is an oxygen, and attached to that oxygen is another hydrogen. There are all also single bonds.

The easiest way for me to solve this problem was to consider all the bonds in the reactants as being broken, and all the bonds in the products as forming, rather than just taking into consideration those that are realistically actually broken and formed. So, I would say 6 H-C bonds are broken, 1 C=C bond is broken, 1 C-C bond is broken, and 2 O-H bonds are broken. I would then say that in the products, 7 C-H bonds are formed, 2 C-C bonds are formed, 1 C-O bond is formed, and 1 O-H bond is formed. Then, add everything up, making sure the signs are all correct, and you should have your final answer of -45 kJ/mol!

Hope this helps! :)