Organic Chemistry Questions

CH3 OH I U I NO n CH CH O N Br CH CH3 CH NO NO CH3 HO CH CH Br C1 CH CH NH

Which of the following formed are upon hydrolysis of compound 2 HO 18 OH O compound 2 d H HO OH OH OH H HO HO 85 55 55 HO IV OH

3 Identify each of the following as acid base or neither HNO3 Ca OH 2 4 5 a b C NH3 d KCI e H3PO4 In the following identify the acid and base and conjugate acid and conjugate base Also label the proton donor and proton acceptor NH4 aq NH3 NH4 aq H O C H3O2 aq H SO4 aq NaOH s OH aq NH3 aq 6 Complete and balance this acid base neutralization equations HC H302 aq

Question 4 We can estimate column efficiency from information on a chromatogram What is the relation between the peak width and the column length Peak width is directly proportional to the column length w Peak width is inversely proportional to the column Mos CAS Peak width is inversely proportional to the square of the column length RAS Setel Peak width is inversely proportional to the square root of the column length 0 SOPAN length ugon sistentes Beauty There is no relation between peak width and the column length s PO C

Write the synthesis of the following compound Br Br T

1a Draw the structure of CIF3 2a Draw the structure of PO4 3a Draw the structure of XeF4 4a Draw the structure of NO3 5a Draw the structure of SF4 1b How many single double and triple bonds are there 2b How many single double and triple bonds are there 3b How many single double and triple bonds are there 4b How many single double and triple bonds are there 5b How many single double and triple bonds are there

An example of polystyrene polymer could be found in a Insulation b Yarns c Adhesives An example of polyacrylonitrile polymer could be found in a Insulation b Fabric An example of poly vinyl acetate could be found in a Packing materials b Wigs c Paints c Computer disks An example of poly methyl methacrylate could be found in a Furniture b Orlon c Textile coatings The number after a compound trade name is usually an indication of a Stock number b Successful attempt d Meaningless d Plexiglass d Lucite d Bowling balls d Plexiglass d None of these

Ethanoyl Chloride water Ethanoyl chloride ethyl alcohol Ethanoyl chloride Methyl Amine Ethanoyl chloride Ethanoic acid Methanoic anhydride water

C d a complete the following reactions CH3 C OH b CH3 3CCH CH COOH COOH CH3 CH COOH CH3CH CH OH CH3 CHOH CH3CH OH OH H H H H

Pentane hydroiodic acid Ethane calcium hydroxide Octane oxygen and an ignition source Ethyne oxygen and an ignition source

Sup MAUTIFU 2 Which aromatic oxalate esters produced the brightest glow with rubrene as the acceptor Which glow lasted longest How do the substituents electron donating vs electron withdrawing affect the efficiency of the chemiluminescence reaction

8 1 Draw the structural formula for each of the following a 5 chloro 4 methyl 2 hexanol 2 3 dimethylcyclopentanol c 5 5 diethyl 1 heptanol b d 2 ethyl 4 isopropylcyclohexanol e 4 ethylphenol f 2 nitrophenol g cyclopropyl methyl ether h isopropyl propyl ether

I write the synthesis of the following compound IV F V

Using average bond enthalpies linked above estimate the enthalpy change for the following reaction CH g 20 g CO g 2H O g kJ If neede

If 10 0 mL of 12 M NaOH is diluted to a final volume of 150 mL what is the concentration of the dilute NaOH solution

Check t V x under each molecule in the table below that is an isomer of this molecule If there are no isomers check the none of the above box under the table X

Predict the major product for the following reaction OI Oll OIV H OH 1 TsCl pyridine 2 Nal CH3 Ill CH3 H 11 H OTS CH3 H H CH3 H I IV H Ts CH

Reaction HNO aq RbOH aq RbNO aq What is the final pH if 0 741 L of 0 322 M HNO is placed in a beaker with 0 420 L of 0 677 M RbOH answer pH 12 59 H C

Based on the following space filling models identify the family to which each of the following molecules belongs Hydrogen Carbon Oxygen Nitrogen amine ester ether ketone b

What reagent or sequence of reagents would best accomplish the transformation below or OH O 1 TsCl pyridine 2 CN DMSO O HCN O 1 SOCI pyridine 2 CN DMSO O NaCN DMSO or CN

Which of the following are Michael donors Select all apply Points will be deducted for incorrect answers ss 0000 E 0 F NO B F H CN G NO CH3MgBr D CH3 2Culi H

Write the reaction between ammonia NH3 and hydrosulfuric acid H S NH3 In this reaction the products side a NH3 e H O b NH4 1 f H 0 completes the reactant side while c HS1 d H S 9 OH 1 and

7 Using chemical intuition what should be the empirical rate law for the following Diels Alder reaction Justify your answer with a proposed mechanism C diene ethane cyclohexene

What is the osmolarity of a 0 250 M Mg3 PO4 2 solution The rx is given so you can get the conversion factor Mg3 PO4 2 3 Mg 2 2 PO4 OA 0 250 OSM B 0 500 OSM C 0 750 OSM D 1 25 OSM E 1 50 OSM

A 1 25 dilution is done with a 10 0 ppb solution What is the concentration of the diluted solution A 0 400 ppb B 250 ppb

What will be the H3O if 0 001500 moles of HCI is added to 1 000 L of water The reaction gives the conversion factor HCI H O H30 CH equil 0 note this is related to the next problem A 0 000150 M B 0 00075 M start 0 00150 C 0 00150 M D 0 00300 M 0 0

An unknown element Uk has three isotopes seen in the table One of the percentage values is missing Isotope Notation Uk 66 Uk 69 Mass amu 65 994 68 958 Percent Abundance 57 00 10 00 Uk 71 70 975 After you have found the missing percent abundance calculate the average atomic mass of Uk Enter your answer to the hundredths place

Calculate the ppb when 0 1000 g of Mg3 PO4 2 are dissolved into a final volume of 500 0 L O A 0 0002000 ppb B 20 00 ppb C 50 00 ppb D 200 0 ppb E 50000 ppb

Calculate the V V when 20 00 mL of methanol is added to 80 00 mL of water OA 10 00 V V B 20 00 V V OC 25 00 V V D 40 00 V V E 400 0 V V

Complete the reaction when ammonia is dissolved into water NH3 H O a NH4 1 the acid is the base is b OH the conjugate acid is the conjugate base is C H301 d H O e NH3

How many non bonding pairs of electrons does SO42 have 07 04 06

pH log H3O pOH log OH H3O 10 PH OH 10 POH H3O OH 10 14 pH pOH 14 What is the pH of a solution with OH 5 55 x 105 M A 2 2437 OB 4 2557 C 5 5000 OD 5 7443 E 9 7443

sample of carbon dioxide gas has a density of Submit Answer Try Another Version 1 item attempt remaining Use the References to access important values if needed for this question g L at a pressure of 0 830 atm and a temperature of 38 C Assume ideal behavior

How many mL of the 10 0 ppb solution in the previous problem are required to make 4 00 L of a 1 25 dilution A 160 mL B 1 00 x 105 mL

A 6 21 gram sample of oxygen gas has a volume of 801 milliliters at a pressure of 3 06 atm The temperature of the O gas sample is Submit Answer Try Another Version Use the References to access important values if needed for this question 1 item attempt remaining C

0 4 OSM wwwwww 0 3 OSM wwwwww True or false about the diagram where a cell is placed into the 0 4 osM solution the cell will shrink and appear crenated due to osmotic pressure True False

1 How many unpaired electrons are in the carbon atom A Paramagnetic B Diamagnetic This atom is 2 How many unpaired electrons are in the copper atom A Paramagnetic B Diamagnetic This atom is

1 mole of MgCl raises the boiling point of water more than 1 mole of Na3PO4 True O False Reset Selection

A mixture with an 60 enantiomeric excess e e contains of the major enantiomer and of the minor enantiom O 90 10 O 80 20 O 50 50 O 75 25

I needed for this questio What volume of oxygen gas is required to react completely with 0 786 mol of hydrogen sulfide according to the following reaction at 0 C and 1 atm hydrogen sulfide g oxygen g water 1 sulfur dioxide g liters oxygen gas

Use the References to access important values if needed fo A 1 01 mol sample of Kr gas is confined in a 24 4 liter container at 21 0 C If the temperature of the gas sample is raised to 41 7 C holding the volume constant the average molecular speed will O not enough information to answer the question remain the same increase decrease

A mixture of helium and argon gases in a 9 37 L flask at 65 C contains 1 06 grams of helium and 4 78 grams of argon The partial pressure of argon in the flask is atm Submit Answer Try Another Version Use the References to access important values if needed for this question 1 item attempt remaining atm and the total pressure in the flask is

Name Antigone Eurydice messenger ANTIGONE CLOZE PASSAGE SCENE 5 Directions Using the words in the text box fill in the blanks to complete the summary sons body final mistakes sword Haimon s Per Choragos flesh bride Tiresias corpse Haimon Date pride wife Creon happiness prophet wisdom The blind of Thebes enters the scene and tells Creon that the gods are angry and that all men make but good men own up to their mistakes and repair the damage According to Tiresias urges Creon to rethink his decision Creon says that he will not back down and he accuses Tiresias of selling his prophesies Creon s only crime is and Tiresias offers words to Creon Creon will pay corpse for of his own flesh for his actions The Choragos says that he cannot remember when Tiresias has ever spoken false words Creon agrees but says it worse to risk everything for pride The Choragos urges Creon to free Antigone and build a tomb for Polyneices Finally seeing his fault Creon agrees and leaves the scene A enters the scene and says Creon was once happy but now everything is gone The messenger tells the Choragos that they are all dead and that overhears this exchange The messenger tells her what he killed himself saw before Creon arrived at Antigone s vault arrived Haimon was there mourning his hung herself When and he accused Creon of taking her from him He then took his and lunged at Creon but drove it into his own side He died as he clung to Antigone Upon hearing this news Eurydice leaves the scene Creon enters carrying as he realizes he is at fault The messenger comes back with more bad new Eurydice is dead She killed herself Creon accepts that he is to blame for the deaths of his

A chemical reaction is run in which 524 Joules of heat are generated and the internal energy changes by 64 Joules Calculate w for the system Joules Use the References to access important values if ne W

1 An amine is characterized by what functional group CO2CH3 d e OH Multiple Choice Identify the choice that best completes the statement or answers the question 4 6 2 Which of the following is an alcohol NaOH a b H3C NH 5 a b NH2 C CO2H C OH d e H3C C 0 3 How many actual double bonds does the benzene ring possess a 4 d 1 b 3 e 0 c 2 CHO a 2 3 dimethylbutane b hexane c 2 methylpentane CH 3 CH 2 OH H3C C H3C C CH H C CH3 The correct name for the compound given above is which of the following a 2 methyl 1 butene d 3 methyl 2 butene 2 ethyl 1 pentene b pentene e c 2 ethyl 1 propene CH3 H3CC CH CH3 CH3 What is the correct name for the above compound H3C CH The compound above is classified as a n a alkane b carboxylic acid aldehyde 7 Which of the following is a secondary alcohol CH3 2 2 dimethylbutane e isohexane d ketone e alkene

Lewis Structures Lewis Structures are used to describe the covalent bonding in molecules and ions Draw a Lewis structure for NHF2 and answer the following questions based on your drawing 1 For the central nitrogen atom The number of lone pairs The number of single bonds The number of double bonds 2 The central nitrogen atom A Obeys the octet rule B Has an incomplete octet C Has an expanded octet

This benzene derivative was used in treatment of wood for telephone poles railroad ties a Aniline b Cresol c Phenol d Xylene An benzene derivative with two basic nitrogen groups is a a Purine b Pyrimidine c Phenol A benzene derivative with on basic nitrogen group one non basic nitrogen group is a Pyrimidine b Imidazole c Purine d Phenol A benzene derivative with 4 nitrogen groups is known as a Purine b Pyrimidine c Furan This benzene derivative is used as an antiseptic agent and in the synthesis of aspirin a Phenol b Cresol d Aniline c Xylene This benzene derivative is used in making TNT tear gas acetone a Xylene b Aniline c Toluene This benzene derivative is used in production of sulfonamides plastics expolsives a Cresol b PABA c Aniline d Purine This benzene derivative is a primary component of many sunscreens a Toluene b PABA c Aniline The sodium salt of benzoic acid is used as a a Stabilizer b Preservative d Phenyl Bonus Another systematic name for Benzene is d Aniline c Coloring agent d Cresol d Phenol d Salt This benzene derivative is linked to leukemia accumulates in the food web mimics hormones a PABA b Dioxins d Cresol c Xylene

A What is the hybridization of the central atom in BeCl Hybridization What are the approximate bond angles in this substance Bond angles B What is the hybridization of the central atom in PO OH 3 Hybridization What are the approximate bond angles in this substance Bond anglos

4 Which reaction represents addition 1 2CH g 30 g 2 C6H12O6 3 H 4 god H C C HO zymase H H Br H H HO C H H 1 2CO g 4H O g H H H H T C C OH HO C C OH H H 2C H5OH 2CO g H H H C C H 11 Br Br 0 0 H H HH C OH H O H H

What is the dominant mechanism operative in the reaction below O SN2 OSN1 O no reaction occurs OE2 OH O E1 H SO4 heat mechanism