Organic Chemistry Questions

10 Using Boyle s gas law and the following data provide the final pressure Show all your work for full credit 2 pts Initial volume 360 mL initial pressure 2 25 atm final volume 0 5 L

When a burning toothpick was inserted into a tube containing a gas the flame was extinguished Which gas was this CO 02 Cl2

Answer the questions in the table below about this molecule OH What is this molecule s chemical formula Note write the simplest molecular chemical formula in which each element symbol appears only once How many CH3 CH and CH groups are in this molecule 0 CH3 CH

17 Ni CN 2 Ni CN 2 H CO3 NICO3

3 N N metyl N syklopentylsykloheksanamin N metyl N sykloheksylsyklopentanamin N pentyl N metylheksanamin sykloheksylsyklopentylmetylamin 4 H N N etylanilin N etylheksanamin N etylsykloheksanamin N sykloheksyletanamin N etylsyklopentanamin What is the name of the compound

Br cl XS Naolt NH3 XS t Buok THE A co HN Colt cor 1103 2 H 02 1 Br Py 2 120 Co aljon

Fill up the boxes with the correct compounds 22 points O NH CH3 Last Name First Name List CH NH2

b Convert the following measurements ml 5 0 ml 25 0 g kg 0 5 mm mm 0 64 ml ml 33 0 mg mg 78 0 mm mm

le On the following compound label each of the 8 carbons either as as primary secondary tertiary or quaternary carbons CI

1 N 2 dietylaminobutan dietylisobutylamin etyletylisobutylamin N N dietylbutan 2 amin 2 N etylisopropylbutylamin N etyl N isopropyl 2 metylpropan 1 amin sec butyletylpropylamin

3 Complete the following reaction scheme Give all product s and indicate major or minor and any relevant stereochemistry 60 points 4 points each h 0 1 k H C 1 BH THE 2 H O OH 1 Hg OAC H O 2 NaBH KMnO4 NaOH Cold P4 C MO

6 Write a balanced nuclear equation for the Beta decay of a Nitrogen 16 b Potassium 40 7 Write a balanced nuclear equation for the Alpha decay of a Plutonium 244 b Strontium 90 Man of 25

Draw transition state for the rds of the following reactions a Hydroboration of propene b Epoxide formation with MCPA and cis but 2 ene

lor 1 LDA THF 78 C 2 CH 3 Br 3 NaOH H O it 30 0 11 OH

7 Add all of the C and H to the following structure 2 pts OH Jo

11 Provide names for the following structures 4 pts C1 si dr CH3 OM OH 2

2 Complete the following nuclear reaction equation by filling in the with a particle that balances the equation A ie B He O A B C 4N C H C e D In

Which statement or statements below is correct or true OA Enantiomers rotate the plane of polarized light in opposite directions but in the same number of degrees B Plane polarized light is composed of waves that vibrate in only one plane OC Asymmetric carbon atoms are examples of chirality centers which are examples of stereocenters D Mirror images that can be superposed are achiral not chiral OE All of above statements

Which of the following will cause a decrease in solubility of solids a Crush the substance into a fine powder b Stirring the solution c Increasing the temperature d Decrease the temperature

H N CH CN CHCN CHC 0 CH CH CH CH CH3 C O NH b Give the full name of the amino acid at the C terminal end of this tripeptide H H N CH C N CH 6 6 6 CH 0 0 i H CH CH CH3 CH3 CH C CH C O T OH

functional groups are shown below 3 pts 0 C OH N C Entha LEC F

Write the product of the following reaction H Ph Br C H3C H Ph TOH

Synthesize octanal starting with acetylene Show the retrosynthesis and synthesis with all reagents and products at each step

Which of the following reactions will produce a CO2 gas NaHCO3 HCI Ca CH3CO2H H O2 MnO2 HNO3 Zn

Part 2 BCR Answer each question in the space provided 1 If 474 6 g of CuSO SH O molar mass 249 71 g mol is dissolved in enough water to make 4 0 L of solution what is the molarity concentration show your work 2 points

a a b CH CH CO H H CH z H CH CH CH CH CH CO H H CH CO H C C H b CH CO Hd CH CH 7 H

Compare the properties of diastereomers A Same physical properties B Can not determine OC Different physical properties D Same chemical properties None of above

A mixture of three gases Ar Ne and He is placed in a 3 00L container at 298 15K and the pressure determined to be 1 46atm What is the number of moles of gas in this container If needed R 0 0821 L atm K mole and 1 000atm 760 0mmHg

2KI Pb NO3 2 2KNO3 Pbl In a beaker 310 grams of potassium iodide KI are reacted with excess lead II nitrate How many grams of lead II iodide Pbl2 v form grams Pblz

The CH3NH2 molecule has 2 central or interior atoms Around carbon the molecular geometry or shape is called A and around nitrogen the molecular geometry is called

H C H3C CHO 50 OH CH CH CO H H CH CH CH CO H C C H OH Saturated H C OH H CH CH CH CH CH CO H CH CH 7 CH3 C C CH3 CH CO H H Unsaturated

Consider the amino acids glycine valine and lysine a How many tripeptides can be formed from these three amino acids if each is used only once in the structure b Using three letter abbreviations for the amino acids give the sequence of each of the possible tripeptides c Draw the structure of the dipeptide that has valine at its N terminal amino acid and glycine as its C terminal amino acid Circle each peptide bond

41 Indicate which represents the higher pressure in each of the following pairs A 487 mmHg or 64 745 Pa E 154 lbs inz or 9 98 atm

During its orbit the Earth s minimum distance from the sun is approximately 148 million kilometers Which of the following correctly represents this number in scientific notation O 1 48 x 108 O 1 48 x 104 1 48 x 10 7 O 148 000 000

3 Draw separate Lewis electron dot structure for oxygen O and oxide 02 2 pts

KCIO3 KCI 0 How many moles of O can be produced by letting 12 0 moles of KCIO3 to react

H C H3C CH CH oCO H CH CH 7 H LOH c c OH CH2 CO H H Cis H3C H H CH CH CH CH CH CO H CH CH 7 C C CH3 CH3 H CH CO H Trans

Give the expression for Keq for the reverse reaction All are gases in a closed container C H6 2Cl C H4Cl 2HCl The concentrations for both Cl and HCI are squared due to their coefficients a H O b OH i C H30 j H S r 0 5000 S 5 5 X 105 x 5 5 x 102 dd 0 7100 C C H6 y 0 7000 ee 1 26 x 10 d C H4Cl k HS 1 52 t 3 5 X 10 Z 1 60 x 105 ff 4 901 f HCl e Cl m HX 0 1 u 8 00 x 105 V 1 75 x 10 aa 1 143 x 105 88 7 93 hh 4 942 g H SO3 h HC H30 p 2 q 3 W 1 11 x 10 bb 0 4900 ii 4 957 CC 1 104 x 105

How many moles and molecules is in 30 g of NaOH hint calculate the MW 1st Show all of your work for full credit 2 pts

Use the What is the name of the compound with the formula Zn3 PO4 2 What is the name of the compound with the formula SCI2 What is the formula for manganese II carbonate What is the formula for boron tribromide

Br B Br you observe in a H NMR spectrum of each compound CH3 3CI Br 3 de tafgil s uoy li toigni eirt to finis ud 2 Circle the molecule s that would give a single peak in its H NMR spectrum CH3 H3C N H3C 2C C CH3 2 SHO H3C CI H3C CH3 a napoibyr Sweled 3 What are the approximate intensities of the three lines in the triplet from the H NMR of diethyl ether CH3CH2 2O CI OR AMM HAS HWAMM SHM AMA SHM H3C CH3 A 4 The H NMR spectrum of diethyl ether CH3CH2 2O shows two signals at 3 50 1 10 ppm with relative peak areas in a 1 1 5 ratio respectively Explain this peak area ratio nislax Soupindoet eviloundzeb non 10 evilor pleob s AMM al 2 5 Define homotopic enantiotopic and diastereotopic hydrogens Give an example of a compound that would have diastereotopic hydrogens and label them noilsupe orll ei tsmW 8

6 Draw two chair conformations chair flips of the structure given below and circle the more stable chair conformation 10 pts OH

9 In an experiment 10 9 g of Scandium was reacted with an excess of bromine to ield 43 5 g of scandium bromide What was the percent yield for this process Sc s Br2 1 ScBr3 s

What is the name of the linear hydrocarbon with the molecular formula C 12H 26 a heptane Ob decane O c dodecane Od undecane

Example Balance the following redox equation in a basic solution Zn NO3 Zn NO

KCI 02 If 3 45 moles of potassium chloride are produced in the reaction how many moles of oxygen are also produ mol O

What is the IUPAC name of each of the the following NH NH

10 How many grams in 0 15 moles of copper II phosphate

The equilibrium constant expression K equals products over reactants depends on the for the reaction Select one a stoichiometry and mechanism b mechanism c presence of a catalyst d stoichiometry e the initial quantities of reactants and products

What is the conjugate base of HCIO Select one O a H3O O b OH O c 0 O d CIO Oe CIO