Organic Chemistry Questions

8 Identify the alkyl groups on the long continuous carbon chain drawn below 3 pts T 3

7 Circle and name the functional groups in the following molecule 12 Stike H

21 Calculate the volume of 25 g of O that has a pressure of 1 8 atm at 50 C 2 pts

A mixture of equal amounts of two enantiomers OA Racemic mixture OB Optically inactive C Optically active O D Both A and B E Both A and C

A student performed the experiment Titration of Acetic Acid in Vinegar However he accidentally over titrated added more NaOH beyond the stoichiometric or equivalence point What effect would this have on his results The calculated concentration of acetic acid would appear higher or lower than the actual value depending on how much he over titrated The calculated concentration of acetic acid would appear lower than the actual value The calculated concentration of acetic acid would not be affected or would just be the same as the actual value The calculated concentration of acetic acid would appear higher than the actual value

H The monosaccharide a is a ketose is produced shown here b is a D sugar c is an aldose H HO H MO CHO OH OH 4

cide if each of the following molecules is chiral or achiral CH CH CH CHOCH CH CH COCH 8 3 CH CH CH CH CH CH CH CH CH CH CHCH OH HOH OH V

13 When the following equation is balanced the coefficient for HCL is FeCl3 aq H2S g Fe2S3 s HCl aq 6 98 3 2 FeCl3 3H S 2 F S 6HCl aq Coefficient for Hll is 6

a Consider the molecules below in terms of a condensation polymerization i Predict the products 2 and show the mechanism 3 steps for the reaction between the two molecules below ii Clearly label the Electrophile and Nucleophile in each step where appropriate iii Name each elementary step HO OH O 0

2 CsH14 19 O2 12 COz 14 H2O Hexane C6H14 burns in a combustion reaction How many moles of oxygen are needed for the complete combustion of 9 88 X 10 1 molecules of hexane O 3 49 mol O 0 156 mol O4 99 mol O 0 0017 mol

5 Board A cylinder filled with chlorine gas has a radius of 650 cm and a height of 10 m What is the cylinders mass 1 Point O4 138 9 Kg 1 281 7 Kg 128 170 Kg 413 890 Ka

Write out the electronic configuration of Calcium Label which electrons are inner shell vs valence shell electrons 2 pts

The pressure of a sample of nitrogen gas N2 is 3 40atm at 314K What will be the new temperature in Kelvin If the pressure is changed to 912mmHg If needed R 0 0821 L atm K mole and 1 000atm 760 0mmHg

How many hydrogen atoms are there in heptane the linear hydrocarbon with seven carbon atoms a 20 O b 16 c 22 d 18

15 points 3 points each Q la Rank the following substrates from most 1 to least reactive 4 in an SN2 reaction Explain the reason for your choice A Order Br Explanation Order B A Br Br B C 1b Rank the following substrates from most 1 to least reactive 3 in an SN1 reaction Explain the reason for your choice Br Br CH3 C D Br

1 Balance the following reactions in an acidic solution Identify the oxidizing and the reducing agent for each reaction Cu NO3 Cu NO

2KCIO3 2KCI 30 How many moles of KCIO3 are needed to produce 1 250 liters of oxygen O

Identify the constitutional isomer with the molecular formula C7H14 H3C CH3 O a Only II O b Only I O c I II and III O d Only I and II CH3 H3C CH3 CH3 CH3 CH3

How would the graph below change if a catalyst were added to the reaction Potential Energy 1 2 Reaction Progress 3 O A Part 2 would be lower and parts 1 and 3 would be unchanged B Parts 1 and 3 would be higher and part 2 would be unchanged C Parts 1 2 and 3 would be lower D Part 1 would be higher and part 2 would be lower

Of the following equilibria only decrease in volume Select one O a N g 3H g 2NH3 g O b 2503 g 25O2 g O2 g O c H g Cl g 2HCl g O d 4Fe s 302 g 2Fe O3 s will sh

Predict the product of the following reactions NH Chose the correct product of the following reaction OH H O OH HBr H SO NH B i OH O H Br l H O Br

For the reaction 1A 2B a plot of 1 A vs time is linear with a slope of 0 761 M s1 This reaction is initiated with A o 2 621 M and B 0 000 M What is the concentration of B after 31 9 seconds Please report your answer to 3 decimal places

A 40 0 glucose solution is available How many mL of this solution is needed to make 24 0 glucose solution with a total volume of 74 0 mL Your Answer

Example Balance the following redox equation in an acidic solution Ag NO3 Ag NO

Of the following which is the strongest acid Select one O a H O O b H S O c HBr O d H Se Oe NH3

12 How many moles in 155 g of silver chloride

a b 3 Complete the following reaction scheme Give all product s and indicate major or minor and any relevant stereochemistry 60 points 4 points each d Major 8 4 d Br heat MUK Major Minor Br NOE beat NaCN L DMF dil HCI q F e J Cl H SO H PO4 heat CN Minor YETUD Gel racemic

Find the percent by volume of 24 5 mL of ethanol dissolved in a 53 75 mL of solution O 25 5 O 45 6 31 3 54 8

2Fe O 2FeO In the above synthesis reaction 8 00 moles of iron Fe are reacted to produce iron 11 oxide FeO How many grams of iron II oxide are formed grams FeO

Biology Which of the following is NOT true of carbon Group of answer choices it forms the backbone of macromolecules within the cell it can form polar covalent bonds it is highly electronegative it can form non polar covalent bonds

7 In the Uniform Real Estate Contract the borrower ho O a legal title b full title c no title d equitable title

Arrange these three compounds in order of increasing ability to form intermolecular hydrogen bonds C H5SH C H5NH and C H5OH OC H5SH C H5OH C H5NH OC H5OH C H5NH C H5SH OC H5NH C H5OH C H5SH OC H5SH C H5NH C H5OH

The following reaction will undergo a substitution reaction in excess acid Answer the questions that follow a The ether shown above has two carbon groups Which carbon will undergo an Sn2 reaction Select b Which reaction c Describ Select excess HBr heat Select The right alpha carbon The left alpha carbon Neither alpha carbons Both alpha carbons

Treatment with O3 followed by dimethyl sulfide DMS converts a trans disubstituted alkene into a n primary alcohol and aldehyde allylic alcohol and ketone secondary alcohol and carbon dioxide tertiary alcohol and carboxylic acid aldehyde and aldehyde ketone and ketone aldehyde and carbon dioxide 4

catalytic acid in water O Option 1 of et upon hydrolysis with g O Option 2

Ignoring the possibility of stereo isomers what is the IUPAC name of the following substance CH3 CH CH CHCCH3 CH3

The total number of valence electrons in the molecule PH3 is and its molecular geometry or shape is called A A

Draw the following intermediates a terbutyl carbocation orbital sketch b brominium ion intermediate for the reactio of Br propyne

35 grams of ethanol is dissolved in 115 grams of water What is the concentration of ethanol in by mass

Under identical environmental conditions which of the following substances is the most soluble in water Select one a Ne b Ar c Kr d Xe e all of these are equally soluble in water

ystem in a saturated solution of the salt is shown by the following equation ly soluble salt with the general formula AaBb The equilibrium AaBb aA bB Mathematically express the solubility product constant Ksp at equilibrium 16 A 1 L saturated solution of AgCl is evaporated to dryness and the residue is equivalent to 2 68 x 105 mol What is the experimental Kp of the silver sp chloride AgCl s Ag aq Cl aq

1 Provide a name for the following compounds using IUPAC nomenclature O NO OH I

Fill in the missing symbol and name the reaction 3 H 1 1 2 3 4 232 U2 Th 92 228 90 144 14 Ce 4Pr Ce 58 59 65 55 Zn 30 40 40 K Ar 18 0 je He

23 Magnesium is added to hydrochloric acid producing magnesium chloride and hydrogen gas

The reaction of methylpropene with HBr in ether gives one of the two products below as the major product Answer the following question s about th Product t HBr ether Br Product A would be formed via a primary carbocation Br Product B

Explain the DEPI NMR data and how it corr to this molecular sturcture 90 45 OH lates

11 How many moles in 235 g of zinc hydroxide

1 Assign oxidation numbers to the atoms in the following compounds A H O B Mg NO3 2 C LiH wwwwwww D N O5 E H4P2O7

Five liquids are shown below Which one would have the highest viscosity H H H H H H H H 1 H C C C C C c c c H H H II H O C C 0 H H H III HH IV H O H HO H H O C C C 0 H H H H HHHHHH V H C C C C C C H 1 1 1 1

Based on the structure of naproxen shown below which of the following statements is CORRECT at physiological pH H3C O Naproxen is predominantly uncharged O Naproxen is negative charged Naproxen is positively charged Naproxen is a zwitterionic Naproxen CH3 COOH