Organic Chemistry Questions

A voltaic cell is constructed based on the oxidation of zinc metal and the reduction of silver cations Solutions of silver nitrate and zinc nitrate also were used Label the silver and silver nitrate on the schematic a Zinc b Silver d Silver nitrate c Silver d Silver nitrate b Silver b Silver nitrate a Silver d Silver nitrate a d C

M Ch What organic class does the following molecule belong to 0 CH3CH CH CCH CH3 O carboxylic acids O aldehydes Oesters ketones

True False The following compound is phenol OH O True O False

A sample of nitrogen N has a volume of 50 0 L at a pressure of 2 ATM What is the volume of gas at a pressure of 15 atm if there is no change in temperature 1 5 points Edit View Insert Format Tools Table

M Cl OH provide IUPAC for BOTH molecules Br

using the following TLC to answer the next question Consider the following silica gel TLC plate of compounds A B and C developed in 30 70 Ethyl acetate petroleum ether ruler plate not drawn to scale 1 07cm 0 99cm 0 75cm 0 36cm 0 25cm 0 17cm 0 0cm A 0 25cm C is at 0 36cm B C 107cm 0 99cm 0 75cm ruler plate not drawn to scale 0 36cm 0 25cm 0 17cm 10 0cm A is at 0 75cm B is at Determine the Rf values of compounds A B and C run on a silica gel TLC plate shown above This question is auto graded Round answers to the nearest hundredth For example rounding 0 843 to the nearest hundredth would give 0 84

OH O A OB OC CH3 OH H3C C C H OH A A C D A CI H B OH OH

For the cell shown the standard reduction potentials are 0 80 V for Ag and 0 76 V for Zn2 Based on the reduction potentials the electrode is where the reduction will occur and it is called the Ag 1M Ag Zn cathode Ag anode Ag cathode Zn anode voltmeter 7 wire salt bridge 1M Zn2 Zn

If a base represented as B reacts with the most acidic proton on the given compound where is the proper location for the end of the curved arrow shown Select the correct circled position for the terminus of the arrow Ho d a Br b a CH3 H B

O A OB C 1 Hg OAC 2 HOCH CH3 2 NaBH4 B C D

Functional group identification Match the numbered molecules with the functional group being asked You need to provide all possible answer correct minus wrong CH3 H C FCH 1 limonene H C CH3 4 ibuprofen H C 7 aspirin CH3 CO H OH 2 muscone H C CH3 5 camphor CH3 CH3 H C CH3 8 geraniol A Which have carbon carbon double bonds B Which have a ketone carbonyl group C Which have an aldehyde carbonyl group D Which have amino groups E Which have aromatic rings F Which have a hydroxyl group G Which have ether groups H Which have an ester group 1 Which have an amide group J Which have a carboxylic acid group OH HO 3 nicotine H O O CH3 6 vanillin H C H 9 acetaminophen

Pick the reactants to synthesize the ether below using a Williamson Ether synthesis 2 e Reactant 1 Select Reactant II Select B 1 NaH or Na 2 II OH uhe OH C D E

Curved arrows are used to illustrate the flow of electrons Using the provided starting and product structures draw the curved electron pushing arrows to show the interconversion between resonance hybrid contributors Be sure to account for all bond breaking and bond making steps I I I I I I I I N H Select to Add Arrows H 1

M Ch What is the IUPAC name for the following compound OH 3 methylhexanoic acid O 4 methylhexanoic acid O 3 propylbutanoic acid O 4 propylbutanoic acid 0

Draw the major product formed when 1 3 pentadiene reacts with this acid Do not include any byproducts formed 1 I I I HCI 1 equiv Draw Major Product

If 25 mL of 0 05 N NaOH required 30 mL of sulfuric acid for titration What is the normality of the acid

Draw the starting structure that would lead to this major product under these conditions Select to Draw 1 NaNH2 2 CH3CH2CH2Br I I I

Rank the following compounds from lowest to highest polarity 1 being the LEAST 6 being the MOST A CH3 B 0 H C D E 12 pts f

Draw the starting structure that would produce this product under these conditions Select to Draw Br2 1 equiv Br Br I I I

Draw the starting alkyne that would lead to the following two products under these conditions I I I I I I I Select to Draw 1 KMnO4 OH warm 2 H3O HO OH Q

A OA OB Pick the Grignard reagent and an epoxide to make this alcohol OC OD MgBr B MgBr C OH X D

Predict the major organic product in the reaction below OA OB OC CH ONS CH3 OH B CH 1 Na 2 CH3CH CH OTs CH D CH

Draw the major product for this reaction Ignore inorganic byproducts 1 Hg OAc 2 H O 2 H2SO4 Select to Draw

OA OB Predict the products A Br B OH HBr xs C Br Br D

Using the image below select the word that best completes the sentence In the following reaction Compound A is the Select and Compound B is the Select Compound A H Compound B I H Compound C

Draw the skeletal line bond structure of 5 bromo 4 4 dimethylpent 2 yne Drawing

Draw the product of this reaction Ignore inorganic byproducts Br2 2 equiv Select to Draw I I I I I I I I I I

OA OB OC Provide the major organic product of the reaction shown below A OH B Olli 1 NaH 2 CH CH CH I C D

O A Predict the major product OB OH aaaa OH 1 CH CH MgBr 2 H 0 B C HO OH

Draw the skeletal line bond structure of E 4 7 dimethyloct 4 en 2 yne Select to Draw

Pick the IUPAC name of the compound shown below OCH CH3 OCH CH O 1 1 diethoxycyclohexane O 1 1 dimethoxycyclohexane O 1 2 epoxycyclohexane O 1 2 diethoxycyclohexane

Rank the orbitals with respect to the closeness of the orbital electron density to the nucleus Use 1 for closest and 4 for furthest S sp Drag and drop options on the right hand side to reorder and match with items on the left Reordering may cause items on the right hand side to swap positions 1 4

Draw the starting alkyne that would lead to this major product under these conditions Select to Draw HBr 1 equiv Br I I I I I I I

Provide the major organic product of the following reaction O A OB nc Br A OH Br Br B HBr xs C Br Br D Br

Write the balanced overall reaction for the three step mechanism 1 C H Br C H Br 2 C H H O C H OH 3 C H OH H O C H OH H O balanced overall reaction Select which species are considered intermediates in the reaction C H C H OH C H OH H O Br H O CH Br

Pick the IUPAC name for the following compound HO X O 3 methyl 3 4 epoxypentan 1 ol O 5 hydroxy 3 methyl 2 3 epoxypentane O 1 2 hydroxyethyl 1 2 dimethyloxirane O 3 4 epoxy 3 methylpentan 1 ol

Draw the starting alkyl bromide that would produce this alkyne under these conditions Select to Draw 1 NaNH2 A 2 H3O

When hydrogen gas is passed over solid stannous oxide the following reaction occurs SnO2 s H g 2 H O g Sn s If the system is stressed by adding additional Sn the system will respond by Select If the system is stressed by adding additional H the system will respond by Select

Pick the IUPAC name for the product O 1 2 epoxy 2 propylcyclohexane O 1 2 epoxy 1 propylcyclohexane O 1 2 epoxy 2 butylcyclohexane O 1 2 epoxy 1 butylcyclohexane MCPBA

energy 1 14 ff ff HOMO HOMO H C CH H C CH Q17 29 Level 1 Unanswered 1 attempt left Figure 17 40 Frontier molecular orbital interaction between two ethene molecules a MOs of ethene The most important HOMO LUMO interaction is indicated by the dashed line b Frontier orbital interaction between the HOMO of one ethene and the LUMO of another Frontier orbital interaction Match the symmetry of the ethene orbitals given in Figure 17 40 HOMO LUMO Drag and drop options on the right hand side to reorder and match with items on the left Reordering may cause items on the right hand side to swap positions Antisymmetic

7 44 Classify each of the following as a combination decomposition single replacement double replacement combustion reaction a CuO s 2HCl aq CuCl2 aq H2O 7 b 2Al s 3Br2 1 2AlBr3 s c 2C H g 5O2 g 4CO2 g 2H O 9 4 d Fe O3 s 3C s 2Fe s 3CO g e C6H12O6 aq 2C H6O aq 2CO2 g

Based on the polarization of the bonds which of the electrostatic interaction is more favorable in the transition state A Transition state a B Transition state b a b 8 OCH Sta OCH OCH 1 3 product OCH O

What is the major product produced in the following Diels Alder reactions A B The 1 4 product is major The 1 3 product is major a H3CO b H3CO H3CO H3CO Filmeye 1 4 product

Find the amount of heat Q needed to raise the temperature of 5 00 g of a substance from 20 0 C to 30 0 C if the specific heat of the substance is 2 01 J g C Must show work to earn credit Include units in your answer

0 26 Calculate the number of moles in each of the following a 85 2 g of Ni b 144 g of K c 6 4 g of H O d 308 g of BaSO4 AE CC TI

Al2 CO3 3Al2O3 3C02 3Fe 30 2Fe O3 C H OH O2 CO H O MgCl Li CO MgCO 2LiCl Zn 2HCI H ZnCl It double replacement combustion

Rank the following dienes with respect to their expected rate of reaction with a dienophile Drag and drop options on the right hand side to reorder and match with items on the left Reordering may cause items on the right hand side to swap positions Most reactive Second most Least reactive Compound b Compound c H Compound a

What is the correct order of reactivity for the following dienes from least to most reactive Drag and drop options into correct order and submit Diene C Diene B Diene A HO

How many grams of precipitate are made when 0 33 grams of iron III chloride reacts with an excess of silver nitrate 0 87g faci Agnoz Fellat Agct Fe 1003 3

Which of the following dienes will react faster with a dienophile A B Compound a Compound b a b