General organic chemistry Questions and Answers

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

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 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

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

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

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

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 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 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

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

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

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

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

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

Which compound is optically active HO BI Br J CI CI

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

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

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

Question 52 How man ons can the 2 energy level contain