Organic Chemistry Questions

Draw labelled Newman projections for the least and the most stable bond of that results from rotation of the C2 C3 conformation 2 3 dichlorobutane Draw labelled Newman projections of the two chair conformations of methyl cyclohexane showing the two possible positions of the methyl group Which of these conformations is the more stable

QUESTION 9 Of the following elements potassium cobalt nitrogen aluminum gold A nitrogen B fluorine C potassium D aluminum is the most easily oxidized Use the Activity Series

QUESTION 13 A compound is composed of only C H and O The combustion of a 0 519 g sample of the compound yields 1 24 g of CO2 and 0 255 g of H2O What is the empirical formula of the compound A C6H60 B C3H30 C CH3O D C2H605 E C2H602

is soluble in water at 25 C A Fe3 PO4 2 B Fe OH 2 C FeS D FeCO3 E Fe C2H3O2 2

Equal masses of the 3 substances were left to sit in the sun at the same time and for the same length of time Which of the following substances will experience the smallest change in temperature and why Material Titanium Lithium Nickel J g C 0 544 3 56 0 502

QUESTION 8 In the reaction below is oxidized and 2AgNO3 aq Pb s 2Ag s Pb NO3 2 aq A Ag and N B Ag and Pb C N and Ag D Pb and Ag E Pb and N is reduced

What is the balanced net ionic equation when aqueous solutions of Pb NO3 2 and KBr are mixed and form a product Is a precipitate formed A Pb2 aq 2Br aq PbBr2 s B Pb2 aq 2NO3 aq C Pb2 aq 2NO3 aq D Pb NO3 2 aq E Pb NO3 2 aq Pb NO3 2 s Pb NO3 2 aq 2KBr aq PbBr2 s 2KNO3 aq 2KBr aq PbBr2 s 2KNO3 s

dentify the pr Br OIV CO Il CH OH OH OCH Br OH IV excess HBr heat CH OH Br OH CH Br CH Br

Complete the formula for the correct molecular weights 16 00 g 1 mole 82 98 g Na3N 1 mole 02 132 1 g Ca NO2 2 1 mole 157 9 g P206

eometry Assignment Directions Show work for how you determined the molecular structure No work no credit 1a Draw the stick structure for H S 2a Draw the stick structure for CO2 3a Draw the stick structure for PH3 4a Draw the stick structure for CS2 Molec 5a Draw the stick structure for 03 1b How many bonds and nonbonding pairs are there 2b How many bonds and nonbonding pairs are there 3b How many bonds and nonbonding pairs are there 4b How many bonds and nonbonding pairs are there 5b How many bonds and nonbonding pairs are there 1c Draw its 3D structure 2c Draw its 3D structure 3c Draw its 3D structure 4c Draw its 3D structure 5c Draw its 3D structure 1d Identify its molecular geometry 2d Identify its molecular geometry 3d Identify its molecular geometry 4d Identify its molecular geometry 5d Identify its molecular geometry

Chemistry How would the following fatty acid be classified CH3 CH2 CH CH 2 CH2 5 COOH Question 9 options omega 3 and polyunsaturated omega 6 and polyunsaturated omega 3 and unsaturated

The red colored blocks indicate the IA NA Mo 8 VB VB VB VIB VIB 18 118 Sc Ti V Ro Ac Ba Ls Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po A alkali metals A IVA VA VIA VIA VILA B alkaline metals C noble gases Mn Fe Co Ni Cu Zn Ga Ge As Se Dy Ho Er Tm Yb Lu Ce Pr Nd Pm Sm Eu Gd Tb Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

OIV OII Br CH OH OH OCH Br OH 66 IV excess HBr heat CH OH Br OH CH Br III CH Br

Identify the reagent s necessary for the following transformation X A mCPBA O H O OH Lindlars Cl enantiomer

Identify the product formed in the reaction shown below OH OH OCH 3 OCH 3 SF SF SF SF H H HO H3CO H3CO HO IV III 1 III CH3OH H SO4 IV

6a Draw the stick structure for SF6 7a Draw the stick structure for BrCl4 8a Draw the stick structure for BrF5 6b How many bonds and nonbonding pairs are there 7b How many bonds and nonbonding pairs are there 8b How many bonds and nonbonding pairs are there 6c Draw its 3D structure 7c Draw its 3D structure 8c Draw its 3D structure 6d Identify its molecular geometry 7d Identify its molecular geometry 8d Identify its molecular geometry

VI Answer the following questions a draw the structure of guanine deoxiribonucleotide 6 What is the following IUPAC name of the following Br 2 1 H C CH3 0 CH 3 H HO H OH H OH OH Draw the structure of the peptide following sequence of amino acids Cys Thr Ser Ile Cys d Draw the structure of Alpha D altropiranosa o stained from the

Draw the skeletal line structure of the triacylglycerol that could be formed from oleic acid

Identify each of the following groups as an activator or deactivator and as an o p director or m director 00 OC O activator deactivator o p director m director NHCH CH3 O activator deactivator Oo p director m director OCH CH3 activator deactivator Oo p director O m director NHC activator deactivator Oo p director Om director

Identify the product formed in the reaction shown below HO III 01 OIV OCH 3 H H CO s II OH H H3CO CH3OH H SO4 OCH 3 HO IV OH

e the following Lewis diagram for propene to answer the questions HHH 2 H member that geometry refers to the geometry defined by the atoms not the e e geometry about atom C is e ideal value of the C C C angle at atom C is Submit Answer e geometry about atom C3 is Retni Entire Group degrees

Which of the following is most basic a b c d

Potassium hydroxide KOH is classified as a n alcohol acid aldehyde base

Which answer has a stable electron configuration O AI Ne O CI Na

Fill in the boxes with correct structures Show stereochemistry aglo com CI OH Cl CHCI3 Cl CH3OH HO HO HO HOI

Question 31 In the formula X O5 the symbol X could represent an element in Group 1 2 18 O 15

A Sample of OXY Occupies a volum of 350 mL at 300k What volume will it occupy at 360k

Question 25 What is the gram formula mass of Ba OH O 154 3 g O 155 3 g 308 6 g O 171 3 g

write the product prepared with butanote of 1 1 dimethylethyl i dont need the phenyl one HO

Write the main product s for each of the following reactions Are the reactions regioselective Explain Are the reactions stereoselective Explain Are these reactions stereospecific Explain Br TbONa T OH TbONa THAU

Chemistry write the product prepared with butanote of 1 1 dimethylethyl

PE kJ 250 200 150 100 50 PEREK what is the change in heat Hp HR Reaction pathway 50 kJ and this graph represents an endothermic reaction 50 kJ and this graph represents an exothermic reaction 50 kJ and this graph represents an exothermic reaction 50 kJ and this graph represents an endothermic reaction Given the equation AH Where Hp represents heat of products and HR represents heat of reactants

SOVE AN The volume of a sample of gas initially at 298 K and 159 mL increases to 456 ml What is the final temperature of the sample of gas if the pressure and amount of gas in the container is kept constant

SYNTHESIS 7 Synthesize one 1 of the following compounds from the starting material Be sure to show all reac jus ju OH b HO OH OH ol ol OH OH OH OH

Question Which answer represents an exothermic reaction g s s 1 s g 1 g

To start we need to calculate the theoretical yields for the following 8 reactions Flask Amount of Amount of Vinegar mL Baking Soda g 1 00 H F G A B C D E 50 50 50 50 50 50 50 50 1 50 2 00 2 50 3 00 3 50 4 00 4 50 Theoretical Yield of CO Limiting Reactant vinegar calculated below or baking soda

Question 20 Magnesium Nitrate Mg NO3 2 contains chemical bonds that are covalent only ionic only both ionic and covalent neither ionic nor covalent

Given the equation for the combustion of a compound 2C H6 7024CO2 6 What is the formula for the missing product OH O H O OHCOOH OCH3OH

Question 17 Given the reaction of an acid and a base to produce salt and water H SO4 Mg OH MgSO4 2H O The type of reaction represented is a neutralization reaction a single replacement reaction a decomposition reaction a combustion reaction

Using the formula M V M V2 Where M molarity concentration and V volume Calculate the volume in milliliters of 0 5M HNO3 needed to neutralize 35 mL of 0 762M NaOH 22 966 mL 0 0109 mL 53 34 mL 13 335 mL

following structure in an example of O II H N CH C N CH C N CH C 00 H H 11 H 948 CH T OH O a amino acid O b protein O c O d tripeptide hydrocarbons CH I C O OH

Question 28 Which choice represents a base HCI NaOH CH3COOH HNO3

ucti uestion 30 The element in Period 4 and Group 1 of the Periodic Table wou classified as a semimetal metal Onoble gas nonmetal

8 How much energy will it take to change 50 0 grams of ice at 0 C to water at 0 C Answer 16700 J

5 Please assign the configuration to the Juan yuMNH2 04 amino acid 6 Please give the appropriate reagents to complete the ff Synthesis O

Question 11 Which subatomic particle has a negative charge O proton O alpha particle O electron neutron

Which formula represents a nonpolar symmetrical molecule JAUNUMI IETINING MISURA MYANMERKINIHINNING DREVINE INPUNSUL TREND PRE STEUNEN ENDNUaleset TIGNINGAN BITHONING VINNELING Shoe BURK MITMEL KORS THE TRANSM SHOGACE Fen PETS HOVERPI TIGED PR REELING NH3 Listo H O HCI LARRMSGLES Wilkers kinsontak CH4

Question 24 Which period 4 element has the most nonmetal properties Br Ge As

Given the following unbalanced chemical reaction C3H8 O2 CO2 H O When the equation is balanced what is the coefficient of O 04 3 02 C 5

What is the empirical formula of a compound that has the molecular formula C6H12Cl2O2 C6H12Cl202 C3H6CIO CH CIO CHCIO