General organic chemistry Questions and Answers

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

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

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

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

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

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

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

efer to the graph above In order to have a saturated solution how many rams of potassium nitrate KNO3 need to be dissolved in 100 grams of water 20 C Solubility g of salt in 100 g H O 100 90 80 70 NaNO 3 CCI 604 50 40 NaC 30 20 10 Pb NO3 2 KNO KEA KCIO K Cr 0 Ce SO4 3 0 10 20 30 40 50 60 70 80 90 100 Temperature C O CLEAR ALL 60 20 100 30

Sample spectrum for a simple organic molecule along with explanations 4 CI CI

10 0 Drow all missing reactants andor products in the appropriate boses by placing otoms on the caves and connecting them with bonds Aad charges when Electron flow arrows should start on the elestronda of an atom or a bond and should end on an atom bond er location where a new bond should be re View Available in DOCAH 119

2 Rank the following compounds according to their acidity 1 least and 5 most NH JOH OH O OH LOH

Classify each of the following hydrocarbons as an alkane alkene alkyne or arene aromatic H H H C H

When considering the behavior of real gases the attractive interactions between gas particles the pressure as compared to the expectation for an ideal gas while the actual volume occupied by the gas particles the pressure as compared to the expectation for an ideal gas Select one a decreases increases b does not affect decreases c increases decreases d increases increases e does not affect increases

To answer the questions interpret the following Lewis diagram for PBr4 7 Br Br p Br Br 1 For the central phosphorus atom The number of non bonding electrons The number of bonding electrons The total number of electrons 2 The central phosphorus atom A obeys the octet rule B has more than an octet C has less than an octet

What is the number of particles in moles of 655 64g of Calcium Chloride CaCl Round any atomic mass from the periodic table to one decimal place

1 Select one a Atomic Structure 2 Electronic Structure Question 5 Which statement describes patterns in how nonmetals in groups 16 and 17 behave when forming ions a O O Nonmetals in groups 16 and 17 tend to first lose and then gain electrons Nonmetals in groups 16 and 17 tend to gain electrons Nonmetals in groups 16 and 17 tend not to lose or gain any electrons O Nonmetals in groups 16 and 17 tend to lose electrons

Which one of the below is NOT a source of biofuel corn algae cellulose methane

Question 4 Match the correct numbered covalent bond with the appropriate macromolecule in the space listed as a to b 5 Points Macromolecule 1 a Protein Peptide band b Steroid distifiat c Polysaccharide Ghicoschic linklage d Triacylglycerol Phosphodi o e nucleic acid estre Covalent Bond 1 ester linkage 2 peptide bond 3 glycosidic linkage 4 phosphodiester linkage 2

Please note that geometry refers to the molecular or ionic geometry The Lewis diagram for PBr4 is Br Br Br The electron pair geometry around the P atom in PBr4 is There is are lone pair s around the central atom so the geometry of PBr4 is Br The Lewis diagram for NICI is There is I N CI CIB The electron pair geometry around the N atom in NICI is

at is the name of the compound with the formula S F10 hat is the name of the compound with the formula Co NO 3 hat is the formula for iron III sulfite What is the formula for tetraphosphorus decaoxide

3 Determine whether each of the following compounds is aromatic anti aromatic or non aromatic N N

s D g To increase the partial pressure of D at equilibrium you could A add B B remove C C add A D add Ar g Bp 54 F Cloudy 81

The reaction 2 CIO aq 2 OH aq CIO3 aq CIO aq H O 1 A CIO3 At was studied at 45 C The following results were obtained where rate CIO M 0 120 0 040 0 040 O rate k CI0 110H 12 O rate k CIO OH Orate k ClO l Orate k CIO 1 OH M 0 030 0 030 0 090 A Use this data to determine the rate law for the reaction rate k OH Initial Rate M s 0 036 0 004 0 012

In a reaction compounds A B react slowly to compound D It is observed that this reaction of A B reacts to C also but at a much faster reaction rate At the end of the reaction only products C and D can be detected with D being the minor product and C the major component Products were separated and analysis of both showed that compound C is much more stable than compound D Please select all answers that apply Hint Draw the energy level diagram of these reactions if needed Select one or more the Gibbs energy of D is higher than that of C the activation energy for the formation of C is greater than for the formation of D the Gibbs energy of C is higher than that of D the activation energy for the formation of D is greater than for the formation of C

If the compound below were reacted with H and Lindlar s catalyst which major product would be obtained Select one O Br Br O Br O O O HO Br Br so Br Br Br Br Br

17 What are 3 factors that determine the severity of a rainstorm How does each factor affect the amount of rainfall

Family 2 or 2A Metals 2 valence electrons very reactive but less than alkali metals Be Mg Ca Sr Ba Ra Family 14 or 4A 4 valence electrons 1 metal 1 metalloid 2 nonmetals This family is incredibly important in the field of technology C Si Ge Sn Pb Be this is a Bohr model C

Reaction C3H8 g 502 g 3CO2 g 4H O g A scientist completes the reaction above and ends up with 172 94g of carbon dioxide What mass of propane C3H8 would need to be reacted to end up with that much carbon dioxide Round any atomic masses on the periodic table to one decimal place

On the phase diagram below region Pressure Select one O a D O b A Oc B Od E O B C A corresponds to the conditions of temperature and pressure under which the solid phase is stable D B Temperature C E

14 Propose a multistep synthesis for the following transformation Your answer should include individual reaction steps including all reagents necessary for each reaction step I NH OH Ph

If Kc 0 0084 for the reaction below at 298 0 K then what is the value of Kp R 0 0821 L atm mol K 3 A g B g C g D g

Match the reagent to the step Drag and drop options on the right hand side to reorder and match with items on the left Reordering may cause items on the right hand side to swap positions Step 1 Step 2 Step 3 Step 4 Step 5 H C C HH C C Na 2 CH3CH2CH2CHO NaNH2 NH3 H O NaNH2 NH3 CH 31 3 CH3 C CH III e CH3 C C Na 4

Rank all acidic hydrogens in the structure below Give the lowest number 1 to the most acidic hydrogen and the highest number to the least acidic hydrogen Give methylene CH2 and methyl CH3 groups only one ranking as all hydrogens in those groups have the same acidity CI HO CI 3 NH

Some reactions in organic chemistry are pure functional group transformations i e converting an alkene to an organohalide but they maintain the carbon skeleton i e the number of C atoms in the molecule remains the same However other reactions change the carbon skeleton i e they increase or decrease the number of C atoms and often also the functional group Which reactio conditions change the carbon skeleton for the compound drawn below Select one or more OHBr ROOR 1 BH3 THF 2 H O2 NaOH 1 MCPBA 2 dilute aqueous acid O 1 Hg OAc 2 in water 2 NaBH4 O Br2 O Br2 H O 1 OsO4 2 Na2SO3 aq OH on Pt 1 032 DMS O HBr

Chemistry Indicate if 2 metilbutanal is soluble parcially soluble or insoluble in the following solvents H O NaOH 5 NaHCO3 5 HCI 5 H SO4 conc H3PO4 85 CH Cl2

8 A researcher attempts to complete the following reaction sequence but the reaction sequence fails Explain why the reaction sequence fails What steps would you take instead to convert the starting material into the desired product Be specific and show reagents and structures if necessary Br OH Mg ether BrMg OH 1 H 2 H O H HO OH

How many carbon atoms are bonded to the circled atom below Answer OH

Calculate the Keq if all are gases 3 H 0 0 600 atm 2 NH heat 1 000 atm 0 600 atm 0 400 atm First put in the chemicals then put in the numbers Pay close attention to the coefficients 1 N start 0 equil 0 200 atm Keq Keq a Nha b N C H d 1 e 2 3 g833 1 h 0500 10 400 27 X 0 300

What is the bond angle around the circled carbon atom below Select one O 90 O 270 O 109 5 O 120 180 OH

Which of the following compounds would be expected to be the major product of the eaction below Br elect one O NaO Bu

Predict the products for each of the following D2 Pd D Lindlar

Convert the following line angle formula to a condensed structural formula t Draw the molecule on the canvas by choosing buttons from the Tools for bonds Atoms and Advanced Template toolba NN H 1200 EXP H C N O S

Which of the following alkenes a c reacts faster with HI b c d all react at same rate

What is the formal charge on chlorine in the compound CIF Select one O a 1 O b 2 O c 0 O d 1

Synthesis Pick either A OH or B andl punite BqH a reasonable synthisay VIGR OH Ho

When the compound below is treated with a strong base which of the following compounds would be the expected major product Br Select one Ne