General organic chemistry Questions and Answers

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

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

9 Here s an ugly molecule Make it look pretty OH

Predict the product for the following reaction O III OIV OI H NaBH CH3OH OH OH olo or OH OH IV OH

p dichlorobenzene Draw the structure for the following Be sure to show all hydrogen unless the presence is assumed as with short hand methods polystyrene Toluene o xylene C OH 3 chlorocylcohexene m dinitrobenzene polypropylene methyl benzene Benzyl bromide 8 4 Isopropyl benzene o bromotoluene styrene butadiene Coole 1 2 dichlorobiphenyl

Select the lowest energy conformation for the following compound O A OB OC A B C D

Identify whether the overall reaction is oxidation reduction or neither O Oxidation Neither Reduction

Predict the major product of the following reaction A O A OB OC OD Br NaOH B OH OH a a C D E

O Catalytic hydrogenation of the following compound produces alkane The number of stereoisomer s formed is CH8 02 0 3 Pd C H

Predict the major product of the following reaction CH7 A OA B OC B OH H SO4 H O C D SO H

Predict the major product s for the following reaction CH8 BH THF H O NaOH 3 A A B C D OH B OH OH dan OH D

Which of the following has the lowest vapor pressure O H O O NaCl O NH3 02 O CH4

The following reaction will yields two products but the first step of the reaction goes through the same transition state TS1 structure Which one of the following structures corresponds to TS1 CH7 Br CH OH Free Energy la TS1 Br 8 Tal Br Tort I Reaction Coordinate OCH3 TS2 TS2

Precipitation titration is a method basedon complex formation due to reaction between metal ions cation and complexing agent ligand A True B False

Which of the statements below does concern the energy diagram of a reaction CH6 Free Energy Reaction Coordinate The rate determining step is the first step The rate determining step is the second step O The reaction goes through one transition state The reaction involves two intermediates

O 0 0413 M O 1 32 M O 0 528 M 0 184 M O 0 409 M 4 Question 32 You have two HCI solutions labeled solution A and solution B Solution A has a greater concentration than solution B Which of the following statements is are true O If you have equal volumes of both solutions solution B must contain more moles of HCI O If you have equal moles of HCI in both solutions solution B must have a greater volume O To obtain equal concentrations of both solutions you must add a certain amount of water to solution B 1 pts Adding more moles of HCL to both solutie will

Balance the following oxidation half reaction in acidic solution Te TeO Provide your answer below

Which of the following is the most likely structure of the following carbocation after rearrangment CH6 OI O II SO III IV

For the compound shown below rank the indicated protons in order of increasing acidity CH3 I H N HA O I ll III O I III II O III I II O III II I OH III OH 11

How many substituents does the following compound have CH4 Sed 02 O 3 04 O 5

Identify the equilibrium below that shows the two chair conformations of the following compound CH4 CI O O O O CI CI T CI CI CI C CI CI CI ZCI

What is a limiting reactant O The reactant which runs out first O The product that forms first All of these O The reactant which reacts the fastest The reactant which has some left over after a reaction

Which of the following is the correct wedge and dash conformation for the following Newman projection CH4 Br BU OI SO II O III O IV CI Br CI H H CH3 Et CI Br Br CI CI Br IV

What is the absolute configuration of the carbon marked with a and b CH5 HO A R B S O A S B R OA R B S OA S B R NH H gel N a S N IZ X O OH

Indicate which pattern of arrow pushing is involved in the reaction step shown CH6 H Proton transfer O Loss of a leaving group O Nucleophilic attack Carbocation rearrangement

Choose the correct resonance hybrid of the following compound CH2 fo de la t 8 8 08 08 OA OB O C A O B 08 C 8 08 D

What is the correct IUPAC name of the following compound CH4 O 3 4 diisopropyl 5 pentyloctane O 3 4 di 1 methylethyl 5 pentyloctane O 3 ethyl 4 isopropyl 5 pentylnonane O 3 4 diisopropyl 7 methyl 5 propylnonane O 3 ethyl 4 isopropyl 2 7 dimethyl 5 propylnonane

How many stereoisomers are possible for the following compound CH5 NH H HO 04 0 8 16 32 O 64 O IZ O H N S OH

If 224 06grams of aluminum metal is reacted with 50 60grams of iron III oxide what mass of excess reactant will be left over after the reaction Reaction 2Al s Fe2O3 aq Al2O3 aq 2Fe s

How many resonance structures can be drawn for the following compound beside the one below CH2 01 02 O 3 04 0 5

Select the conformation of trans 1 4 dibromocyclohexane that is the origin of stabilization CH4 OI O II O III OIV 1 4 E Z IV IV

Which of the following compounds have tetrahedral electron geometry CH1 1 CIH e H C H H O HF B F F O I II and III O I II IV and V O III IV and V O IV and V OIH O All of these H H H N H H 0 H IV T H V

Determine the position of the equilibrium in the following acid base reaction CH3 H Z H H N H O The left side O The right side O The middle This is not an acid base reaction H Z H N H OH

1 Write the oxidation numbers for each species A C H5OH

1 Write the oxidation numbers for each species A PO4 B MnO4

1 How much energy in kJ is needed to rise the temperature of 375mL of water specific heat of water 4 186J g C from 19 C to 35 C

2 Write the oxidation numbers for each species and then identify which species is oxidized and which is reduced AIF3 Ba Al BaF

The reaction A B is found to have a rate constant of 4 06x10 s 1 If the reaction starts with A o 0 678 M it will take s before A 0 298 M Please write your answer with 3 significant figures i e 12 3 s

In the following illustrations balls of the same color represent atoms of the same element Which of the illustrations represents a valid chemical transformation at the particulate level 8 8

ow much energy is required to raise the temperature of 14 8 grams of solid nickel from 20 3 C to 37 8 C nswer es it needed for this q Joules

Use the References to access important values if need energy is required to raise the temperature of 14 8 grams of solid nickel from 20 3 C t Joules

O 1 CH3ONA CH3OH Br 2 NaOH H O 3 H3O workup 4 heat

According to the following reaction how many grams of ethane C H6 will be formed upon the complete reaction of 22 7 grams of ethylene C H4 with exces hydrogen gas hydrogen g ethylene C H4 g grams ethane C H6 ethane C H6 9

ot 8 Visited The illustration to the left represents a mixture of iodine purple and fluorine green molecules If the molecules in the above illustration react to form IF3 according to the equation I2 3 F2 2 IF3 the limiting reagent is the number of IF3 molecules formed is the number of I and atoms molecules in excess is

11 According to the following reaction how many moles of dinitrogen monoxide will be formed upon the complete reaction of 0 724 moles ammonium nit ammonium nitrate aq dinitrogen monoxide g water 1 moles dinitrogen monoxide

According to the following reaction how many moles of iron III chloride will be formed upon the complete reaction of 0 886 moles iron with excess chlor gas iron s chlorine g iron III chloride s moles iron III chloride Submit Answer Use the References to access important values if needed for this question The Another Mountai

a Choose a compound from the following pair depend on their respective physical properties asked Briefly explain your answer Lower boiling point between n butanol and propanoic acid ii Higher solubility between propanoic acid and pentanoic acid b The diagram shows several reactions involving etahanoic acid H C C H H C C OH Na X K Cr O H Y 4 ma 3 ma

c Show the products of the hydrolysis of the following tetrapeptide at physiological pH by applying the generic reaction hydrolysis of an amide shown below How many separate products should you have Label the N terminus and C terminus the peptide R LLOH Tetrapeptide H C H N CH3 NH 0 NH nghe HO H NH d NH H C OH NH OH H N Question 5 Look at the structures of the products you drew in answering problems 2a 3a and 4a Which of these three biomolecules would you expect to be the most water soluble Explain Be as specific as you can You DO NOT have to draw pictures showing the interactions Remember that you have to discuss the solubility of all three in order to explain why one might be more soluble than the other two

Determine whether a reaction occurs for each metal metal nitrate solution pair Fe s Cu NO ag Reaction occurs Fe s Zn NO aq Answer Bank Cu s Fe NO aq Reaction does not occur Zn s Cu NO aq Mg s Zn NO aq