Organic Chemistry Answers

Assignment title: Synthesize succinic anhydride from 90g of the succinic acid. Purify the product. Calculate theoretical yield and percentage yield of the succinic anhydride if actual yield is 47g.

1.Reagents/ Apparatus

2.Procedure (Synthesis and Purification)

3.Uses

4.Precautions

A.Calculation of theoretical Yield and Percentage Yield

B.Draw/ Paste Reflux Condenser and Buchner Funnel

Is it safe to use Succinic anhydride as preservative? If yes what could be the allowed percentage?

Which of the following statements is INCORRECT? (1) H-C≡N is a linear molecule and the bond angle of H-C-N is 180 O (2) Formaldehyde is a trigonal planar molecule with the H-C-H bond angle of 120 O (3) Water is a bent molecule. The H-O-H bond angle is 120 O and the arrangement of the electron pairs on the oxygen atom is tetrahedral. (4) Methane is a tetrahedral molecule with the H-C-H bond angles of 109.5 O 

In the structure shown below, the non zero formal charge are

In the following chemical reaction, please identify which molecules are oxidized, reduced, which molecule is being oxidized and reduced, and determine the change in the oxidation state of nitrogen (assume O is -2 and H is +1 oxidation states). Note: NADH = Nicotinamide adenine dinucleotide.

2 NO3 + 5NADH + 7H+ N₂ + 5NAD+ + 6H₂O

1.   Rank the following set of compounds in terms of relative ACIDITY (1 = most, 5 = least):

OH

CH OH

SH

CH2SH

SO3H

2

NO

NO

NO

NO2

NO2

1.   Answer the questions below (a-c) for the follow series of compounds:

SO2NH2

CO CH

COOH

OH

CONH

2

3

2

CH3

CH

CH3

CH3

CH

3

3

A

B

C

D

E

a.       Which compound above is MOST acidic?

b.       Which compound above is LEAST acidic?

c.       Which compound above is MOST susceptible to hydrolysis?

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1.The reaction shows radioactive decay of excited technetium-99 into a lower-energy state of original nucleus. What kind of ray emission is indicated by green bolt sign/question mark? Write 2 properties of the emitted ray. https://lh3.<wbr>googleusercontent.com/<wbr>lpIyw8t21B8BV6YvCs9ZupmhcRoYyH<wbr>aMRtdbBfLTgZNo5fL-<wbr>qthMgT1I1V5USjGGbwC5_<wbr>xFQu5KvUsLoqQek9gE7zIgk4ajNaL-<wbr>VTyUgmgz9wR51HfYIDEEYlyR0jif3D<wbr>A=w466

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1.Name the structure with proper justification. Explain in 5 sentences.

https://lh4.googleusercontent.<wbr>com/WPnImg-tO-JvE-<wbr>QIUcgJZhMgnIbDiilzINJIp9RM99UX<wbr>7G5UtsjzwgBdMWhPJlOQMzBX76n1V1<wbr>orb-wYSMdqFS-<wbr>fdT3KQ4Va7rnawsg5rAmsj19nZo0hQ<wbr>tCQe12B4eeHVA=w375

2.Name the structures. 

a) https://lh4.<wbr>googleusercontent.com/<wbr>vn9Pvx7BKw7CVDr8Z4FoPFM6wOplxC<wbr>PJO2ChXL1J3v7ZcKm0HJm1fCSkOpGk<wbr>IbwheI2SCPhBvW2sj2msk6B_<wbr>LTK1FTG1IZ1UnRhKJuQH4KaDiJTzMm<wbr>PrHnAkQuGxh7jEVQ=w225

b) https://lh3.<wbr>googleusercontent.com/<wbr>oikUllM960HEypYMsoenuQoFNLXBsj<wbr>_Il4AJbxlO7vNSNnnW_<wbr>BWbX7y0xbZmvzwgHWjG5zxGgEctDfB<wbr>TF5NQYujBBhBySSdeaUJ_<wbr>LZSJHm1gN9et46O8uqxDZLQvf6FiVg<wbr>=w446

1.Electronic configuration of an element is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5. Answer the following questions based on this information.

 a) Explain how you can find out its position in the periodic table (group & period) from the electronic configuration, in two sentences. 

b) What block element is it?

c) Write one property of this element.