Organic Chemistry Questions

The following 3 molecules are dissolved in ether and extracted with 3M NaOH Which of the following correctly describes the compositio of the two layers 1 OH 3 O Aqueous 1 Organic 2 3 O Aqueous 3 Organic 1 2 Aqueous 2 Organic 1 3 O Aqueous 1 2 Organic 3 2 NH

How many electrons are in the delocalized system of this molecule O 10 06 O 12 8

39 Ca Indicate the number of protons neutrons and electrons in the following atom 20 protons 19 neutrons 18 electrons O 39 protons 37 neutrons 29 electrons 20 protons 19 neutrons 20 electrons 39 protons 2 neutrons 39 electrons 4 O 20 protons 20 neutrons 18 electrons 20 protons 19 neutrons 22 electrons

Which of the following are homogeneous mixtures Tomato sauce with meatballs A saline solution The air in this room HCI aq

50 What is the symbol of the element X below 23X2 OV 4 Sn 27

Which of the following elements are alkali metals OK Na Mg Ca Ba

Which reagents best accomplish the following transformation fer O 1 HOCH CH OH H cat 2 CH3CH MgBr excess 3 H3O O 1 NaOH A 2 CH3CH Br excess 3 H3O O 1 H3O A 2 CH3CH C O CH CH3 O 1 CH3CH MgBr excess 2 PCC HO f

Which of the following solvents can be used with NaNH CH3CH OH CH3OH H O Liquid NH3 CH3CO H

What is the oxidation number of O in O O 1 0 2 2

Complete the following table Atomic Number Z Mass Number A 138 Protons 56 Neutrons Electrons Symbol 54

Which of the following is the correct set of arrows when isopropanol reacts with acetylide in acid base reacti H C H C H C H C H C OH3C H3C OH3C H3C OH3C OH O H O H O H H C H C H C H C H C H3C H C H3C MC

Consider the compound but 1 yne What does the yne tell us about the structure The compound has 4 triple bonds The compound has at least one triple bond The compound has a double bond between carbon 1 and 2 The compound is an alkyne so it has single bonds only

Which of the following elements are transition metals N F Ca Sn

Which best represents the protonation state of the amino acid lysine at pH 7 O H3N H3N H N NH3 NH3 NH NH OH OH

Which of the following solvents can be used with CH3 3CLIE CH3CH OH CH3OH H O Liquid NH3 CH3 CH2 4CH3

What is the major product of this reaction HO HO OH OH H LOH

How many electrons can the n 3 energy level contain Question 54

Which of the following elements are non metals Na ON C Co

Which structure is consistent with this 13C NMR spectrum O 140 CH3 CI 120 100 80 PPM 60 20

What is a correct mechanistic step of this reaction Br O Br Br Br Br SCH3 Na Na CH3SH SCH3 SCH3 Na Br Br e Br SCH3 NaBr

When a nonvolatile solute is added to a volatile solvent the solution vapor pressure the boiling point and the osmotic pressure across a semipermeable membrane 117 the freezing point decreases increases decreases decreases increases increases decreases increases increases decreases increases decreases decreases decreases increases decreases decreases increases decreases increases

Which solution should have the highest vapor pressure O 0 10 M sucrose C12H22011 0 25 M sucrose C12H22011 0 50 M Sucrose CroHooQul

Balance the below chemical reaction using whole number coefficients What is the coefficient in front of oxygen C8H18 O g CO g H O g O a 2 b 1 O c 3 O d 25 Oe 12

Which of the following can impact the rate of reaction select all that apply Doubling the concentration of the reactants Adding a Catalyst Lowering the reaction temperature Doubling the reaction volume of an aqueous phase reaction all liquids Doubling the reaction volume of a gas phase reaction

What are the absolute configurations of the two chiral centers of the following molecul Sel NH OI R and II R OI S and II S O I S and II R OI R and II S

What is are all of the possible product s of dehydrohalogenation of trans 1 bromo 2 ethylcyclohexa Et Br PO m NaOMe

Which structure is a reasonable intermediate for this alcoholysis reactio olma OH O O Lov OH OH Otr OH OH OH OH OH H OH OH

Which substance will be most soluble in C6H6 O a NH3 Ob CS c SO

What is are the major product s of this reaction H CN O H CN CN CN CN CN CN CN ON Heat Enantiomer

What is the oxidation number of Mn in MnO4 6 7 7 6

Which compound is optically active HO BI Br J CI CI

Which aryl halide reacts the fastest with NaOEt Br Et Br OEt Br Br

Based on the rules we learned in class which of the following sets of quantum numbers written in the order n I m ms represent the last electron in ground state aluminum 3 1 1 1 2 4 2 1 1 2 3 2 1 1 2 2 1 0 1 2

Which choice is an example of a nucleophilic acyl substitution CN d Br CN Br NH H CONa A SNa NH pH 4 5 CN OCH 3 CN

Polyethylene is a synthetic polymer or plastic with many uses 1 35 g of a polyethylene sample was dissolved in enough benzene to make 100 mL of solution and the osmotic pressure was found to be 1 86 torr at 25 C What is the approximate molar mass of the polyethylene 177 g mol O1 13 x 104 g mol 7 40 10 g mol 1 24 x 105 g mol 1 35 x 105 g mol

Which solution should have the lowest vapor pressure 0 10 M C 2H22011 0 10 M KNO3 O 0 10 M Ca

What is the major product of this reaction Br CH3 H CH H3CH C Ph O O O O H C H CHC H CH C Ph H C H CH C H CH3 Ph CH3 t BUOK I BUOH CH3 Ph Ph H C H CH C CH3

Which solid will be least soluble in water O CaSO4 FePO4

CO2 g 393 5 kJ mol H O 1 285 8 kJ mol AH kJ mol An error has been detected in your answer Check for typos miscalculations etc before submitting your answer Submit Answer Review Topics The standard enthalpy of combustion of ethene gas C H g is 1411 1 kJ mol at 298 K Given the following enthalpies of formation calculate AH for C H4 9 Retry Entire Groun 9 more group attem Slee iclas Blackboard T References 2

The appropriate IUPAC name for the compound shown below is Br O E 3 bromo 4 5 dimethylhept 3 ene O O Z 3 bromo 4 5 dimethylhept 3 ene Z 1 bromo 1 ethyl 2 3 dimethylpent 1 ene O E 1 bromo 1 ethyl 2 3 dimethylpent 1 ene

60 40 20 O of base Tid 40 CI Br 80 CI Br 120 M 170 172 160 m e 200

What are the strongest solvent solute attractive forces that exist in a solution of CH CCH in water Ohydrogen bonds Oion dipole forces O London dispersion forces O covalent bonds Odipole dipole forces

A particular liquor is 28 0 ethanol CH3CH OH by volume Calculate the concentration of ethanol in molality The density of ethanol is 0 789 g mL the density of water is 0 998 g mL assume the volumes are additive Your Answer m m

Question 52 How man ons can the 2 energy level contain

What is the atomic number for 129 531

Which is a resonance contributor for this molecule OO O HC CH C CH

What is a major product of this reaction O SO3H SO3H O OH Fuming H SO4

What is the greatest contributing resonance structure for the arenium ion intermediate in this reaction N N NO NO NO HNO3 H SO4

What is the symbol for the following element Atomic Number Mass Number Z A blank1 52 O 130 Te2 130p 2 130p 2 O 130 Te2 Protons Neutrons Electrons blank2 78 54

Which of the following molecules is an Aldopentose O O HO HO CH OH FO H H CH OH CHO H HO H OH HO H H OH CH OH LO CHO H HO H OH HO H CH OH CH OH To HO H 11