اسئلة الشهر الاول

By printing my name below, I pledge that
"On my honor, as a University of Babylon at Boulder student, I have neither given nor received unauthorized assistance on this work."

Name __________________________________________



Recitation TA s Name _____Nadhir N. A. Jafar______
Recitation Day & Time _____30/11/2011___________
Grading Information
Page # Points Possible You’re Score
2-6 (Question 1) 90 _______

7 (Questions 2) 10 _______

7 (Question 3) 10 _______



______________ TOTAL (out of 100)


General Instructions
(1) This is a CLOSED BOOK exam! No notes and molecular models are allowed.
(2) You have 2 hours to complete the exam.
(3) Write your name at the top of each page, starting with page 2.
(4) You can get a scratch paper.
(5) If caught cheating, you will receive at best an F for this exam. The instructor reserves the right to proceed further in compliance with university

. Q1. Multiple Choice Questions (90 Points)
1. Which of the following statements concerning the structure of the functional group present in carboxylic acids is incorrect?
A) Two oxygen atoms are present.
B) A carbon-oxygen single bond and a carbon-oxygen double bond are present.
C) A carbon-hydrogen bond is present.
D) An oxygen-hydrogen bond is present.
2. Which of the following statements concerning the properties of carboxylic acids is incorrect?
A) Short-chain monocarboxylic acids are liquids at room temperature.
B) Carboxylic acids have higher boiling points than alcohols of similar molecular mass.
C) Carboxylic acids cannot hydrogen bond to water.
D) Carboxylic acids can hydrogen bond to each other.
3. Carboxylic acids may be prepared by oxidation of either
A) ketones or aldehydes
B) Secondary or primary alcohols
C) Primary alcohols or aldehydes
D) ketones or secondary alcohols
4. Which of the following statements concerning the acid strength of carboxylic acids is correct?
A) All are weak acids
B) Their acid strength is equal that of strong mineral acid such as HCl
C) Aromatic acids are strong and nonaromatic acids are weak
D) Unbranched acids are strong
5. Which of the following statements concerning carboxylate ions is correct?
A) They may be negatively or positively charged
B) Carboxylate ions formed from dicarboxylic acids carry a -2 charge
C) They contain more carbon atoms than their parent acids
D) They are always positively charged
6. Carboxylic acid salts may be converted to their "parent" carboxylic acids by reacting them with
A) A strong base such as NaOH
B) A strong acid such as HI
C) An alcohol such as methanol
D) A ketone such as acetone
7. Which of the following acids would produce a carboxylate ion with a minus two charge?
A)
B)
C)
D)


8. Esters are produced through the reaction of
A) A ketone and ether
B) A carboxylic acid and an alcohol
C) An aldehyde and a phenol
D) A carboxylic acid and a ketone
9. The ester obtained by reacting benzyl alcohol and benzoic acid is called
A) Benzyl benzene
B) Benzyl benzoate
C) Phenyl benzoate
D) Benzyl benzate
10. Which of the following statements concerning acid anhydrides is incorrect?
A) They undergo hydrolysis to produce the parent carboxylic acid.
B) They are generally less reactive than the corresponding acid chloride.
C) They have structures in which three oxygen atoms are present.
D) They are produced by reacting two carboxylic acids with each other.
11. Which of the following is a correct notation for the carboxylic acid functional group?
A)
B)
C) More than one correct.
D) No correct response.
12. Which of the following carboxylic acids is paired with its correct IUPAC name?


A)



B)



C)


D) More than one correct response.
E) No correct response.
13. Which of the following functional groups is always found at the end of a carbon chain?
A) Aldehyde
B) Carboxylic acid
C) Ketone
D) More than one correct response
E) No correct response

14. Which of the following statements concerning the boiling points of carboxylic acids is correct?
A) They are higher than those of corresponding alcohols.
B) They are lower than those of corresponding alkanes.
C) They are lower than those of corresponding aldehydes.
D) More than one correct response
E) No correct response
15. Which of the following compounds could not be oxidized to a carboxylic acid?
A) Propanal
B) 2-methyl-1-propanol
C) 2-methyl-2-propanol
D) More than one correct response
E) No correct response
16. The general structural difference between a carboxylic acid and an ester is the same as that between an
A) Alcohol and ether.
B) Aldehyde and a ketone.
C) Alkane and an alkene.
D) More than one correct response
E) No correct response
17. Which of the following esters is paired with an incorrect IUPAC name for it?


A)

B)

C)
D) More than one correct response
E) No correct response
18. For which of the following types of carboxylic acid derivatives is the parent carboxylic acid(s) a product of the derivative s hydrolysis?
A) Acid anhydride
B) Acid chloride
C) Ester
D) More than one correct response
E) No correct response
19. Which of the following pairings of ester common and IUPAC names is correct?
A) Ethyl propionate and propyl ethanoate
B) Propyl acetate and propyl ethanoate
C) Ethyl butyrate and butyl ethanoate
D) More than one correct response
E) No correct response

20. Statements:
(1) The compound ethanoic acid contains two carbon atoms and two oxygen atoms.
(2) Unsubstituted short-chain monocarboxylic acids are completely miscible with water.
(3) The two reactants in an esterification reaction are a carboxylic acid and an aldehyde.
A) All three statements are true.
B) Two of the three statements are true.
C) Only one of the statements is true.
D) None of the statements is true.
21. Statements:
(1) The boiling points of esters are much higher than those of corresponding carboxylic
acids.
(2) The compound benzoic acid is a heterocylic compound.
(3) In linear form, the ester functional group can be represented as -COOR.
A) All three statements are true.
B) Two of the three statements are true.
C) Only one of the statements is true.
D) None of the statements is true.
22. Statements:
(1) The compound 4-oxobutanoic acid contains both a carboxyl group and a carbonyl group.
(2) Aldehyde oxidation is a method for preparing a carboxylic acid.
(3) Both IUPAC and common names for esters consist of two words.
A) All three statements are true.
B) Two of the three statements are true.
C) Only one of the statements is true.
D) None of the statements is true.
23. Statements:
(1) Hydrolysis of a mixed acid anhydride produces two different carboxylic acids as products.
(2) Short-chain unsubstituted monocarboxylic acids are strong acids while their longer-chain counterparts are weak acids.
(3) The parent alcohol for the ester methyl acetate is methyl alcohol.
A) All three statements are true.
B) Two of the three statements are true.
C) Only one of the statements is true.
D) None of the statements is true.
24. Statements:
(1) Hydrogen bonding is not possible between carboxylic acid molecules.
(2) The alpha-carbon atom in a carboxylic acid is the carbon atom to which the carboxyl group is attached.
(3) Sodium butanoate and ethyl butanoate are both examples of esters.
A) All three statements are true.
B) Two of the three statements are true.
C) Only one of the statements is true.
D) None of the statements is true.
25. Benzoic acid Propyl butanoate
A) Have the same molecular formula but are different compounds
B) Both contain a carbon ring system
C) Contain the same number of carbon atoms but are not constitutional isomers
D) Two names for the same compound

26.

A) Water
B) Base in water
C) Alcohol
D) Carboxylic acid

27.

A) Water
B) Base in water
C) Alcohol
D) Carboxylic acid

28.
A) Water
B) Base in water
C) Alcohol
D) Carboxylic acid

29.

A) Water
B) Base in water
C) Alcohol
D) Carboxylic acid

30.

A) Water
B) Base in water
C) Alcohol
D) Carboxylic acid




Q2: Carboxylic acid does not give any derivative of carbonyl group. Explain why?












Q3: 1. which of the following compounds is the strongest Br?nsted acid? Why?







2. What is the major product of the following reaction?