General organic chemistry Questions and Answers

What is the atomic number for 129 531

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

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 Aldopentos O O O HO HO H HO HO H HO HO CH OH FO H H CH OH CHO OH H H OH CH OH CHO H OH HO H HOTH CH OH CH OH FO HT H H OH CH OH

What is the major product of this reaction O HO HO HO OH OH OH 0 OH NaBH MeOH

What is the full electron configuration for Arsenic As 6 15 25 2p 3s 3p6 3d7 4s 4p6 O 1s 2s 2p 1s 2s 2p O 1s 2s 2p 3s 3p 3s 3p 3s 3p 3d 0 4s 4p 3d 10 45 4p 4s 4p 4

B Write a bond line formula for each of the following compounds a 1 4 Dichloropentane b sec Butyl bromide c 4 Isopropylheptane d 2 2 3 Trimethylpentane e 3 Ethyl 2 methylhexane f 1 1 Dichlorocyclopentane cis 1 2 Dimethylcyclopropane trans 1 2 Dimethylcyclopropane g h i 4 Methyl 2 pentanol j trans 4 Isobutylcyclohexanol k 1 4 Dicyclopropylhexane 1 Neopentyl alcohol m Bicyclo 2 2 2 octane n Bicyclo 3 1 1 heptane 0 Cyclopentylcyclopentane

For the reaction A B doubling the concentration of A always doubles the rate of 1 reaction True False

Which reaction synthesizes this molecule with the poorest atom economy assume 1 equivalent for all reactant CI OH OH O CH3OH CH3OH H CH3CI NaOH CH3OH

The half life of a reaction of compound A to give compounds D and Eis 35 5 min when the initial concentration of A is 0 150 M How long will it take in min for the concentration to drop to 0 0375 M if the reaction is first order with respect to A Where as In A kt In A for a first order reaction Report your answer to 1 decimal place Your Answer

Which of the following elements are metals Mg Te Ag As

Rank these chair conformations from least to most stable less stable more stable CH3 CH3 OH CH3 CI HST OH CI 1 01 3 2 4 0 1 3 4 2 O 2 4 3 1 01 4 3 2 CI 2 3 OH OH 4 CH3

What ions go into solution when sodium chlorate solid dissolves in water Na CIO3 Na ClO3 O Na Cr O Na CI 0 Nat Cl 0 2

Which of the following elements are metalloids Te Ag Mg As

What is the abbreviated noble gas configuration for Chlorine O Ne 3p5 O He 3s 3p5 O Ne 3s 3p5 O Ne 3s 3p

Which of the following elements are halogens Br He Ne

Which products are most likely to form in this reaction OH OH you Na CH3OH NH3

Which of the following subshells are found in the first principle energy level n 1 f d 352

b diisobutyl ether Step 1 Draw Kekule structures of the reagents Step 2 Mark reacting atoms group or bonds Step 3 Indicate proton and hydroxide groups to be removed Step 4 Write Kekule structure of the product Step 5 Write the complete equation using a Kekule structures b Condensed formula c Line angle formula

Is 24Mg2 considered a cation anion or a neutral element cation neutral element anion 4

What structure is consistent with these spectra 100 80 60 40 H NMR Spectrum 200 MHz CDCI solution 20 10 9 Peaks 4 48 singlet 2H 7 34 multiplet 5H of base peak 8 lidad 40 7 80 6 91 5 120 160 m e 4 M 170 172 3 200 1 2 1 TMS 0 8 ppm

Which indicated hydrogen is most acidic HC H B C A H OB OD OC H H D

0 8 0 6 0 4 0 2 3000 C H O 2000 Wavenumber cm 1 m 1000

What is are the product s of this reaction 11 99 O MeO OME H MeOH OMe MeO OMe you

Which of the following subshells are found in the third principle energy level n 3 S f

Which of the following elements are main group elements Cr Ca

What is the full electron configuration for sulfur O 1s 2s 2p 3s 3p O 1s 2s 2p63s 3p4 O 1s 258 356 15 25 20636 27

What is the major product of this reaction O O H N NC HOOC OH OH OH CN 1 NaCN HCI 2 H H O

What is the full electron configuration for sillicon O 1s 2s 2p 3s 3p O 1s 2s 2p 3s 3p4 O 1s 2s 2p63p4

Classify the following as a physical or chemical change A log burning in a fireplace chemical

Which is the strongest nucleophile in a polar aprotic solvent such as acetone CH3CO Na CH3SNa CF3ONa CH3ONa

How many valence electrons does Carbon have Question 73 How many valence electrons does Cobalt have

Write the chemical formula for this molecule S10 C1 S Cl

7 Synthesis Design a reasonable synthesis for the following R NOTE You can use any other inorganic and organic reagents The molecules below are a set of a possible intermediate set to go through in the synthesis It is not required that you make the molecules below in your synthesis OH OH

A chemical reaction rate compares a the concentration of the reactants to the rate of the reaction b the temperature of the reactants to the rate of the reaction c the concentration of the products to the concentration of the reactan d the surface area of the reactants to the rate of the reaction

In the H C N molecule the hybridization of carbon is of nitrogen is OA sp sp OB s p sp OC sp sp O D sn sn and the hybridization

What is the correct combination of A B and C HH HH A HBr CCI B C A H Pt C ethanol B Na NH3 C 1 BH3 THF 2 H O2 NaOH O A H Pd BaSO4 B LINH2 NH3 C HgSO4 H SO4 O A Na NH3 B NaNH2 NH3 C 1 R BH THF 2 H O2 NaOH A Li NH3 B NaOtbu C 1 Hg OAc 2 H O 2 NaBH4 3 PCC 2

Which of the following compounds will produce a carboxylic acid when treated first with Br in NaOH and then acidic wor

What is the abbreviated noble gas configuration for Gallium O Ar 3d10 4p3 Ar 4s2 3d10 O Ar 4s 3d 10 4p O Ar 4s 4p O Ar 4s 3d10 4p 27

Choose the best description for the selectivity specificity of the transformation shown below Br V V Bri stereospecific O both stereospecific and regioselective neither stereospecific nor regioselective regioselective

What kind of compound is CO A Non polar molecule with polar bonds B polar molecule with non polar bonds OC ionic OD Polar molecule with polar bonds

Which represents an initiation step of a radical reaction R O O R 2 OR OR 2 OR R R O O R OR

What are the bond angles associated with the indicated atoms HO H II III O1 109 5 II 109 5 III 120 O1 107 11 105 III 105 OI 105 II 120 III 180 01 105 11 109 5 III 109 5

What is the full electron configuration for bromine O 15 25 2p 3s 3p 3d 0 4s 4p O 1s 25 2p 3s 3p 3d 0 4s 4p5 O 1s 2s 2p O 1s 2s 2p O 1s 25 2p 3s 3p 3d 4s 4p6 3s 3p6 4s 4p5 3s 3p 3d 0 4s 4p

Part 2 Practice Problems Follow steps 1 5 to illustrate the synthesis of the following alcohols a dipropyl ether Step 1 Draw Kekule structures of the reagents Step 2 Mark reacting atoms group or bonds Step 3 Indicate proton and hydroxide groups to be removed Step 5 Write the complete equation using a Kekule structures b Condensed formula c Line angle formula b diisobutyl ether Step 1 Draw Kekule structures of the reagents Step 2 Mark reacting atoms group or bonds Step 3 Indicate proton and hydroxide groups to be remove Step 4 Write Kekule structure of the product

What is the strongest type of intermolecular force present in CHF3 A ion dipole B hydrogen bonding C dipole dipole D dispersion

Give the set of four quantum numbers that could represent the last electron added using the Aufbau principle to the Cl atom A n 3 1 1 ml 1 m 1 2 B n 2 1 ml 1 m 1 2 C n 3 1 0 ml 1 m 1 2 OD n 3 1 2 ml 1 m 1 2

For the following reaction which of the following change s in the IR spectrum is consistent with conversion of the reactant to the product H CH CCECH 1 NaNH 2 CH CH Br H CH CC CCH CH3 O Absorption at 2250 cm 1 should disappear a new sharp absorption at 3300 cm 1 should appear O Absorption at 1650 cm 1 should disappear a new sharp absorption at 3300 cm 1 should appear O Sharp absorption at 3300 cm 1 should disappear Sharp absorption at 3300 cm 1 should disappear a new absorption at 1720 cm 1 should appear

Molecular compounds are usually A Composed of positive and negative ions B Composed of two or more transition elements C Composed of metal and nonmetal D Composed of two or more nonmetals