Organic Chemistry Questions

Which species is most nucleophilic in a protic solvent O BF3 O FeCl3 O PPh3

Which set of starting materials will result in this product THF OFY PPh3 MgBr

Which structure best corresponds to the IR spectrum shown LOD TRANSMITTANCE121 50 D 4000 O 3000 2000 NAVENUMBERI 11 1500 mr 1000 m 500

The compound below is classified as a n i H C CH Ketone Alkene Aldehyde Carboxylic Acid

Which structure is consistent with this IR spectrum O O 0 8 0 6 0 4 0 2 0 0 OH OH fo 3000 2000 Wavenumber cm 1 1000

Which type of orbital overlap is not involved in the sigma bonding of the following molecul O sp s O sp sp3 O sp s O sp sp

Which of the following elements are alkaline earth metals Ca Ba K Na

Which reagent is suitable for the transformation shown below OH OO3 in THF followed by Zn HCI O KMnO4 HCI heat O NaBH4 in THF followed by H3O O Na2Cr O7 H SO4

Which of the following subshells are found in the second principle energy level n 2 S

How many neutrons does the following ion have 129 531

Which of the following electronic transitions in a hydrogen atom would have the highest energy A n 4 to n 1 B n 2 to n 1 C n 4 to n 2 D n 4 to n 3

How many millimeters are in 9 221x10 5 km 4

According to the reaction below NH3 is NH3s H On NH a A base b Neutral G An acid d Both an acid and a base 14 aq OH aq

What is the mass of 1 25 L of kerosene Kerosene has a density of 0 820 g mL

How many pints are in 635 mL

Which of these liquid compounds will give a orange precipitate when treated with Br2 in presence of NaOH ethylacetate Benzaldehyde butanal pentan 3 one

12 26 Write the balanced chemical equation for the complete combustion of each of the following compounds 1 propanol C H OH 1 O g CO g H O g

How many grams of nitric acid HNO3 can be prepared from the reaction of 138 g of NO with 54 0 g H O according to the equation below 3NO2 H O 2HNO3 NO OA 108 B 126 C 189 D 92

For each of the funding as for svampes Shown 0 H eg E ON i 11 U groups 4 3 400 cm Ho indicate complete V 3 00 1720

Perform the following calculations and round off the answers to the proper number of significant figures Report answers in scientific notation 124 65 756 12 86 0 7805 0 01 4 03 x 10 2 2 04 x 10 2 2 31 x 10 1 999 x 10 8 15 x 104 x 4 0 x 10 5 2 30 x 10 9 2 x 10

How many orbitals are in an s sublevel 0 1 02 3 4

Which of the following elements are metals Co

To calculate the freezing point of an ideal dilute solution of a single nondissociating solute of a solvent the minimum information one must know is the molality of the solute the molality of the solute and the freezing point depression constant of the solvent the same quantities as in B plus the freezing point of the pure solvent all of the quantities in C plus the molecular weight of the solute all of the quantities in C plus the weight of the solvent

Classify the following as an ionic or a covalent compound lithium sulfide is a n ionic O covalent compound

W How many valence electrons does iodine have 2 07 17 53

1 Give All the possible products for the following reactions Name each product Br NaOH Cl H O Br H 0 2 Using the E Z system name the following Alkenes page 292 293 of your book F Br OH izni CI Br

11 Which statement is correct about the effect of the substituent groups on the acidity of alcohols b Electron donating groups decrease acidity by stabilizing the conjugate base Electron donating groups increase acidity by stabilizing the conjugate base Electron donating groups decrease acidity because they destabilize the conjugate base d Electron donating groups increase acidity because they destabilize the conjugate base 12 Finish the reaction C H OH KOH c a C H OK H b C H K O c C H OK H O d C H K H O

Using the solubility rules from this manual or your textbook predict the solubility in water soluble or insoluble of these compounds a KClO3 potassium chlorate b KCl potassium chloride c AgNO3 silver nitrate H AgClO3 silver chlorate AgCl silver chloride

What is the major product of this reaction O Br tte Br Br HBr ROOR

Which of the following statements is FALSE All voltaic galvanic cells involve the use of electricity to initiate non spontaneous chemical reactions Reduction occurs at the cathode All electrochemical reactions involve the transfer of electrons Oxidation and reduction half reactions occur at electrodes in electrochemical cells

ethyl propanoate What is the outcome of the reaction acetic anhydride with H O acid ester only acid c only alcohol d only ester a b

Which of the following are alkaline earth metals Note for this and any other question where the answer spaces are boxes more than one answer may be chosen Calcium Cs 1 pts Sodium

9 Which of the following is a major product of the dehydration reaction of 3 methylpentan 2 ol a 3 methylpent 1 en 2 ol b 3 methylpent 2 en 2 ol c 3 methylpent 1 ene d 3 methylpent 2 ene 10 Which of the following alkohols is the strongest acid b R CHOH a R COH c RCH OH d CH OH

7 Which of the following is the naphthalene a 00 000 of b 20 8 What is the name of the following compound a naphthalene b nitrobenzene NH c c toluene d B d

Which of the following are physical changes E Water freezing to form an ice cube solid dry ice subliming and releasing gas A log burning a fireplace Dissolving sugar in water

Which should be more soluble in NH3 CH3CH CH CH3 choice in terms of attractive forces or HOCH CH OH Explain your

Which element has the following shorthand electron configuration Ar 4s23d104p5 Br O CI OV

How many valence electrons does arsenic As have 02 05 15 33 A

Which of the following are chemical changes An ice cube melting O Alcohol dissolving in water Burning a piece of paper Combustion of gasoline

Why is the compound name prop 3 ene never written in scientific literature The compound is very rare and doesn t exist naturally This is a trick question prop 3 ene is widely written in scientific literature It s not possible to have a three carbon chain with a double bond Because the name is incorrect and should be written as prop 1 ene

1 Draw the structures for each of the alcohols and USE ARIO to rank them in order of these relative acidities Explain how you used ARIO 2 What base can you use to deprotonate each of the alcohols 3 Show how you can use isopropyl alcohol to make a specific ether using the Williamson Ether Synthesis 4 Show how you can use isopropyl alcohol to add to an alkene to make an ether using Mercury Acetate addition reaction

In this experiment if ml of cyclohexanol was added to the round bottom flask and I ml of H SO4 and 3 0g of cyclohexene was formed at the end of the reaction what would be the yield of cyclohexene See the reaction below ALL CALCULATIONS MUST BE SHOWN OH Cyclohexanol mp 25 C bp 161 C den 0 96 MW 100 16 H PO4 H O Cyclohexene bp 83 C den 0 81 MW 82 14

Which of the following compounds is most acidic CH3OH CH3Br CH3CI CH3SH C CH NH

Which of the indicated protons is most acidic H V HH N HII IV

Which of the following statements is TRUE about the behaviour of electrons The lowest energy state of an electron bound to an atom is called the ground state An excited state electron will spontaneously transition to a lower energy state and in the process will release a photon of light It takes many oscillations of the electric field for energy to be transferred from light to matter All the above are true

The equilibrium constant for the generic reaction A g 2B g 2C g is Kc 1 2x102 at 400k Calculate the value of Kp O 1 2x102 O 0 35 O 3 7x104

Which element has the electron configuration 1s 2s22p63s 3p64s 3d 04p65s 4d 05p O Se Te As

The electron configuration of sulfur is O 1s22s22p63s23p4 O 1s 1p62s22p O 1s22s23s22p63p4 O 2s22p63s23p6 M

An element can be changed into a simpler element by a chemical reaction or chemical change O True False

5 What is the IUAPC name of the following compound CH CH CH CH CH a 2 methyl 3 pentene b 2 methyl 3 pentyne 6 What is the C C C bond angle in benzene a 60 b 90 c 120 CH c 4 methyl 2 pentene d 4 methyl 2 pentyne d 128 5