Organic Chemistry Questions

In the answer choices below a solid line represents a covalent bond and a dashed line represents intermolecular attraction Which of the following shows a hydrogen bond Select one O H CI H H CI H CI H H 0 H none of these all of these

What is the conjugate base of HSO4 Select one a SO4 b H SO4 c H3SO4 d OH e HSO4

5 How many moles of water are needed to produce 7 65 moles of hydroge uoride BF3 H2O HF H3BO3

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

c What type of mechanism step s occur s in the second step LLG neve attack 2 Draw the product s of the following reactions a b C Br Br BrB Br 5 Bro Q BV oferererer Br OY Por Br W Br BY comentar B1 or or twor Br

9 How many grams in 2 5 moles of potassium hypochlorite

CuCl2 2 NH OH Cu OH 2 2 NH CI How many molecules of CuCl are needed to react with 15 moles of NH4OI O 1 81 X 1025 molecules CuCl2 O 1008 molecules CuCl O 4 5 X 1024 molecules CuCl O 9 03 X 1024 molecules CuCl

2 Identify the oxidation and reduction reactions in the following reactions NH3 g O2 g NO g H O 1 I

Which one of the following should have the lowest boiling point Select one a C3H8 b C12H26 c C6F6 d C6H12 e 6H6

In a lab 4 52 liters of oxygen O2 are reacted with excess Ca The calcium oxide CaO produced is massed at 21 4 grams What is the percent yield 106 O94 7 73 8 Zbao 47 3

CH CHCH C OH CH3 CH CHCH CNCH CH CH CH3 CH3 CH3 NH CH OCH CH CHCH COCCH CHCH to PHOH CH carboxylic acid ester anhydride amide none of the above

Which of the following pure substances experience London dispersion forces Select one O a none of these O b BH3 O c CH4 O d NH3 Oe all of these

Explain how the law of conservation of mass is related to stoichiometric calculations The types of problems solved above

anol is the alcohol found in brandy that is sometimes burned over cherries to make the des lee e a balanced equation for the complete oxidation reaction that occurs when ethanol C H5OH bu the smallest possible integer coefficients 0 C H5OH error has been detected in your answer Check for typos calculations etc before submitting your answer Botry Entire Group 9 more group attempts remaining CO H O

ein Syniesis EXERCISE DNA and RNA Secondary Structures 5 G G C A T A G A 3 Create the complementary strand for this DNA fragment Remember to label the 3 and 5 ends of the new DNA strand References

CH CH CHCH NHCH CH CH CH OQ CH CH CHCHCOCCHCHCH CHCOCCHI CH CH comprecision CH CHI CH NH CH CH CH CHCHCOH CH carboxylic acid ester anhydride amide none of the above

1c Explain what an nucleophile is and identify which is the nucleophile in the following reaction H Hydronium ion Cyclohexene A nucleophile is The structure that is a nucleophile is 1d Explain what an electrophile is and identify the electrophile in the above 1c reaction An electrophile is The structure that is an electrophile i

When IONIC substances dissolve the IONS When COVALENT substances dissolve the ATOMS within the solute arate stay together

The diagram below shows a voltaic cell The anode is Component C Electrode A Select one Direction E Electrode A Electrode B Component C Component D Direction E Component D Direction F Electrode B Direction of electron flow Direction F

b Consider the RADICAL reaction shown below i Predict the major product and byproduct Then draw the FULL electron pushing mechanism for the reaction including ALL intermediates with lone pairs and formal charges and ALL electron pushing arrows ii Initiation Propagation Br hv A

Which of the following would be an appropriate choice to buffer solution pH at pH 9 0 Select one a b 0 1 M HIO K 2 3 x 10 11 and 0 1 M KIO 0 1 M HBrO Ka 2 0 x 10 9 and 0 1 M KBrO 0 1 M HF K 6 8 x 10 4 and 0 1 M KF c d 0 1 M HCIO K 3 0 x 10 8 and 0 1 M KCIO e 0 1 M HC3H5O2 Ka 1 3 x 10 5 and 0 1 M KC3H502

At a temperature of occupies 18 8 L at 751 torr Write your answer as 123 C C 0 326 mol of CO gas

Indicate the strongest intermolecular force present in the following substances nitrogen monoxide ammonia He methane Choose Choose Choose Choose Th

Please provide the reagent s needed to complete the reactions PROVIDE REAGENTS G i MOH ye 0 ini on vyh OH now in

a CO H Br CO Me Pd catalyst Base amine heat

where appropriate If no reaction is anticipated write no reaction

A compound has a molecular weight of 477 18 g mol and an empirical formula of C10H7O2 What is the molecular formula Select the correct answer below O C30 H2106 O C4H1303 O C14H1203 none of the above

Reaction C3H8 g 502 g 3CO2 g 4H O g If a scientist completely reacts 353 8grams of oxygen gas O with excess propane C3H how many particles in moles of carbon dioxide is likely to form Round any atomic masses on the periodic table to one decimal place

5 Provide an arrow pushing mechanism that accounts for the following transformation l OH H cat 10 12 HO Premant SESON O

An ideal solution is one in which the intermolecular forces IMFS between solute and solvent are the exact same strength as the IMFS in the two pure substances In an ideal solution AHsoln 0 Based on this information which of the following statements is true Select one O a An ideal solution can form if the entropy of mixing is negative ASmix 0 O b An ideal solution can never form O c An ideal solution can form if the entropy of mixing is positive ASmix 0 O d An ideal solution must form under all temperature regimes

The picture below shows how an object in the sky appears to several hours Early Morning Noon What causes the object to appear to move in this way A the sun revolving B Earth revolving C the sun rotating D Earth rotating To revolve means to move in a path around another object whereas to rotate means to spin Late Afternoon

NH4 2SO4 Ca OH 2 2NH3 CaSO4 2H O For the balanced equation above determine the approximate mass of ammonia NH3 that is created from excess ammonium sulfate and 2 3 mo of calcium hydroxide 0 068 g 39 g 78 g 0 27 g 52 g

owing reactions indicating stereochemistry where appropriate If no reaction is anticipated write no reaction

For the elementary reaction NO3 CO NO2 CO2 the molecularity of the reaction is Select one O a 2 k NO3 CO O b 2 k NO3 CO NO CO2 O c 4 k NO3 CO NO CO O d 4 k NO2 CO2 NO3 CO QG 2 KINO and the rate law is rate

What is the partial pressure in atmospheres of H if a mixture has 5 0 moles of CO2 3 0 moles of N2 and 1 0 mole of H The container has a total volume of 5 73 L at room temperature of 25 00 C Your answer should have two significant figures round your answer to one decimal places Use R 0 08206 L atm mol K Provide your answer below

A What is meant by atom economy B What is the formula to calculate atom economy Use the equation function above to receive credit do not use diagonal bars C Use one of the reactions shown in the video to calculate its atom economy D Why is atom economy used in green chemistry

6 Provide an arrow pushing mechanism that accounts for the following transformation O Ph HO OH H cat Ph

Draw a Lewis structure for NO3 in which the central N atom obeys the octet rule and answer the following questions based on your drawing The number of unshared pairs lone pairs on the central N atom is The central N atom forms The central N atom forms single bonds double bonds

In a very abstract way hexaphenylbenzene was synthesized by putting all the following reagents together catalysts extra acids and bases not shown Based on this information and i stoichiometry the overall synthesis had more 3 Phi 2 r Ph a an equal number of additions and eliminations Ob eliminations Phi Ph CI Ph PPh Ph JFX SCH H4N O N Ph OH Ph additions Fe Br PH Ph Fh Ph Ph C 0 0 Fe 2 HBr 5 H O HC1 H

the following would increase the par pressure of B at equilibrium A s B g C g AH 0 A adding A B increasing the total volume of the container C increasing the temperature D removing C 54 F Cloudy

HCN Lewis Structure with dipoles CS Lewis Structure with dipoles HC H O Lewis Structure with dipoles the atoms are bonded in the following order C C O O H Molecular Geometry Number of electron domains Bond Angle s Central Atom s Hybridization This molecule is polar nonpolar Molecular Geometry Number of electron domains Bond Angle s Central Atom s Hybridization This molecule is polar nonpolar Molecular Geometry Number of electron domains Bond Angle s Central Atom s Hybridization This molecule is polar nonpolar

The average bond order is the number of bonds between two atoms taking into account resonance Draw a Lewis structure for the nitrite ion and answer the questions below 1 There are equivalent Lewis structures for NO number

What is the major product of the following reaction A B C D Compound a Compound b Compound c Compound d H O HgSO4 H SO4 O O

What are the products formed when an ethyl radical abstracts a bromine atom from Br2 O O O O C CH CH and HBr CH CH Br and H CH CH Br and Br CH CH Br and H

What is the major product of the following A B C Compound a a Compound b Compound c H3CC CLi b Br CH3CH 20 C

d 10 g Which of the following would increase the molarity concentration Select 2 answers a add a different solute b add more solute c add more water d evaporate some of the water

6 What is the Percent Composition of all elements in the compound from Question Show your work CH CH OH

11 Provide names for the following structures 4 pts C1 si de re CH3 OH 2

2 Chlorine 36 has Protons Neutrons ways to write out isotope Chlorine 36 2 pts electrons What are the other 3

c b a a H3C c H3C LOH OH b H3C d OH structures CH3 CH3