[abcd1209]

1) H2C=O + CH3NH2 <-----> ?

My Answer: CH3NH2 is the lewis base and H2C=O is the lewis acid. Nitrogen donates to H2C=O, while double bond is broken. Both of them combine as CH2-O-CH3NH2.

2) CH3(C=O)-CH2(C=O)-OCH3 + CH3O(-) <-------> ?

My Answer: The CH3O is the lewis base and the "long set" is the lewis acid. The oxygen of the lewis base donates to the lewis acid, as the CH3 cleaves off the oxgen of the lewis base. The complete reaction is...(CH3)2O + CH3(C=O)CH2(C=O)O(-)

3) CH3CH2CH2-COOH + Na2CO3 <------> ?

My Answer: I eliminated 2Na+. CO3(-) is the lewis base and the "long set" is the lewis acid. The carbon from lewis base donates to lewis acid, as the H cleaves off the Hydroxide in the lewis acid. The complete reaction is...CH3CH2CH2CH2-COO(-) + HCO3

If you have a program to draw the correct structures, then use it. otherwise, you can explain a correction the way I have with "My Answers". All help is appreciated. I would really like to get this material down! Thanks

[abcd1209]

any help?

[AWK]

1. This is an addition (and eventually elimination 0f water) reaction
CH2O + CH3NH2 = HOCH2NHCH3 = CH2=NHCH3

2. 2) CH3(C=O)-CH2(C=O)-OCH3 + CH3O(-) <------->
CH3(C-O(-))-CH(C=O)-OCH3 + CH3OH