Organic Chemistry Questions

Question 75 How many valence electrons does Arsenic have Question 76

Which of these may not be a product of an aldol condensation 8 O ex

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

Which of the following elements are noble gasses CI He Br

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

Which of the following arenes will result in the highest percent ortho product upon reaction with Br of F or N

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

What is the abbreviated noble gas configuration for Caesium O Xe 5d1 O Xe 5d10 651 O Xe 651 O kr 6s

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

What are the products of this reaction O O O OH OH H H H H ia H enantiomer enantiomer enantiomer enantiomer

Which of the following elements are metals Mg Te Ag As

What is the major product of this reaction 2 CH CH NHCH trace acid OH C

What is the boiling point change for a solution containing 0 831 moles of naphthalene a nonvolatile nonionizing compound in 250 g of liquid benzene Kb 2 53 C m for benzene 8 41 C 0 761 C 3 04 C 2 10 C 0 526 C

calcium hydroxide OA 2 2 1 1 OB 1 5 3 2 O C 1 6 3 2 O D 2 1 6 2 QUESTION 5 ammonia OB Calcium chloride calcium nitride Which of the following compounds is insoluble in water OA Sodium chloride water

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

Which combination of reagents would produce the following Robinson product 5 i 1 NaOEt 2 H O A 1 NaOEt 2 H O A 1 NaOEt 2 H O A 1 NaOEt 2 H O A

Explain the Dynamic Equilibrium that exists in a saturated solution

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

Draw the line structure for 4 methyl hex 2 yne Explain the steps you ve taken to draw the structure 4 marks

The equation below is known as the EA k Ae RT a Van t Hoff equation Ob Arrhenius equation Oc rate law d Henderson Hasselbalch equation e Clausius clapeyron equation

Why will this synthesis fail HO 1 C H MgBr ether 2 H O HO HO The reactant organic compound has a group that will adversely react with Grignard reagent O The product formed will be too unstable because of two hydroxy groups with strong dipole effect O Because of the highly polar hydroxy group in the reactant organic compound it will not dissolve in ether solver O The nucleophilic attack by the Grignard reagent is sterically hindered by the ring structure

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

How many protons does the following ion have 129 531

Which of the following statements is TRUE The absorption and emission of light occurs in fixed discrete quantities of energy known as photons Light and matter can t interact because matter does not have a natural frequency The double slit experiment for electrons proved that electrons are particles Absorption is when energy is released from matter in the form of light particles

Classify the following as a Sugar dissolving in hot tea physical physical or chemical change

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

Estimate the Average Rate of disappearance of A between Os and 35s given the below data for the reaction of A 2B M 1 2 1 0 8 0 6 0 4 0 2 0 0 a 0 0053 M s Ob 0 045 M s c 45 M s S d 189 M s 0033 M 10 15 20 time s 25 T 30 6 35 40

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

Predict Will a solution form if potassium nitrate is mixed with NH3 O yes O no

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

Which is the major product of the following Claisen condensation H5C 0 O H C 0 OC H5 F Looms OC H5 H5C 0 OC H5 C H5ONa in C H OH

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

Which structure is antiaromatic O H

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

In an alkyl halide the halogen serves 2 functions that render the alkyl halide reactive towards substitution and elimination processes One is that halgens serve as leaving groups and substitution elimination reactions can only occur when a leaving group is present What is the other reason O The halogens have pk values above zero making them weaker acids and more likely to participate in dissolution O The halogen repels electron density rendering the adjacent carbon atom nucleophilic and therefore subject to attack by an electrophile O The halogen is usually in an allylic postion and therefore does not participate in resonance making it less stable and more likely to react The halogen withdraws electron density rendering the adjacent carbon atom electrophilic and therefore subject to attack by a nucleophile

What is the full electron configuration for calcium O1s 2s22p 3s23p64s O1s 2s 2p 3s 3p6 1s22s22p 3s23p 4p 1s22s22p 3s23p64s

Why will this synthesis fail S HO 1 C H MgBr ether 2 H O HO HO O The reactant organic compound has a group that will adversely react with Grignard reagent O The product formed will be too unstable because of two hydroxy groups with strong dipole effect O Because of the highly polar hydroxy group in the reactant organic compound it will not dissolve in ether sol O The nucleophilic attack by the Grignard reagent is sterically hindered by the ring structure

HO p p O HO HO CH3 NH NH CH3 p HO NH

What is the starting material for the reaction below Oll 4 11 NaOH III OH IV