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Synthesis Questions

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Can you please explain these problems. See the attached file.

1.) Which form of molecule A is the most stable (1, 2, or 3)? Provide a graphical (i.e. figures not graphs) provide an explanation for your answer.

2.) Enamines are generally reactive toward electrophiles. For example, compound E reacts with HBr at room temperature. Surprisingly, enamine F is unreactive with HBr even at 150 °C. Provide a rationale for this difference in reactivity.

3.) The cis isomer of 1,2-azodifluoride (below) is more stable than the trans isomer by 3 kcal/mol. Explain this difference.

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See the attached file(s).

1.) Which form of molecule A is the most stable (1, 2, or 3)? Provide a graphical (i.e. figures not graphs) provide an explanation for your answer.

Check this website, I'll be glad to update the posting with more explanations if you are not sure about what the interactions are.

http://www2.trincoll.edu/~tmitzel/advorgfold/probsetfold/ps_2/ps_2_ans/ps_2_ans.htm

2.) Enamines are generally ...

Solution Summary

The molecules which are the most stable are given. Enamines that are reactive towards electrophiles are also discussed. The differences in reactivity are provided.

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See Also This Related BrainMass Solution

Decomposition and Synthesis Reactions

Question 1 (Essay)

Write the complete balanced equation for the reaction between barium metal (Ba) and nitrogen gas (N2). You do not need to make the subscripts smaller; just write them out as regular numbers. For example: N2.

Question 2 (Multiple Choice)

Which of the following is a product formed when NaCl decomposes?

Na2
Cl
NaC
Cl2

Question 3 (Multiple Choice)

What do all decomposition reactions have in common?

They all produce water (H2O) as one of the products.
They all produce individual elements as the final products.
They start with more active reactants and end with less active products.
They start with one reactant and end with more than one product.

Question 4 (Multiple Choice)

Which of the following combinations of reactants will result in a synthesis reaction?

Cl2 + HBr
Ca + H2O
MgO + H2O
C2H2 + O2

Question 5 (Multiple Choice)

Which of the following is a synthesis reaction?

2H2O yields 2 H2 + O2
H2 + Cl2 yields 2 HCl
2Li + CaO yields Li2O + Ca
CH4 + 2 O2 yields CO2 + 2 H2O

Question 6 (Multiple Choice)

Which of the following is a product formed when K reacts with Cl2?

KCl
K2Cl
KCl2
K2

Question 7 (Multiple Choice)

Which of the following compounds will produce H2O as one of the products when it decomposes?

Cu(OH) 2
Hg(ClO3)2
MgCO3
CaO

Question 8 (Essay)

Write the complete balanced equation for the decomposition of Al(ClO3)3. You do not need to make your subscripts smaller; just write them out as regular numbers. For example: Al(ClO3)3.

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