General organic chemistry Questions and Answers

hemistry Q4 IA Review 1 Schools se the equation below representing the reaction between hydrogen sulfate also referred to as sulfuric tid and sodium hydroxide to answer the questions that follow 2NaOH H SO4 2 H O Na2SO4 3 Balance the equation above 4 350 0 mL of 0 50 M hydrogen sulfate solution is reacted with 15 0 grams of sodium hydroxide What volume of water will be produced

3 56 In a gas mixture the partial pressures are argon 415 mmHg neon 75 mmHg and nitrogen 125 mmHg What is the tota pressure in mmHg exerted by the gas mixture

What is the major product of the following reaction O3H HO O O HO HO Br HO O Br O OCH 3 H3CO 03H OCH 3 03H Br NaOCH OCH 3 SO3H

What would be a suitable reagent set in the scheme for synthesis of pyruvic acid 2 oxo propanoic acid from propene b O a Hg OAc 2 H O followed by NaBH4 2 H CrO4 O a MCPBA b PCC O a HCI H O2 b Mg ether followed by CO2 and H3O Oa KMnO4 cold NaOH b H CrO4

The compound with a condensed structure of CH3CCCH CH3 has carbons and has a bond The name will be

Based on the data table one scientist concludes that the mass of AgCl formed depends only on the amount of HCI added and another scientist concludes that the mass of AgCl formed depends on the amount of the limiting reactant How might this conflict be resolved Sample 1M HCI mL 50 50 25 1 2 3 2M AgNO3 mL 50 25 50 AgCl formed g 7 2 7 2 3 6 OA Explain the reasoning of each scientist to the other scientist OB Compare the solubilities of the reactants and the precipitate O C Read other lab reports that describe what takes place during this reaction D Perform further investigations using different amounts of reactants

c Add wedge and dash bonds to give 3R 5 bromo 2 chloro 3 fluoro 3 methylhexane Indicate the configuration at the 3 position only The configurations at the 2 and 5 positions are unspecified those groups are used to determine priorities for the configuration at the 3 position Select Draw C H Rings Br CI F More Erase

For the following acid base reaction predict the position of the equilibrium and identify the most stable base 1 11 LOLO IV O favor the right side with compound IV being the most stable base O favor the right side with compound II being the J most stable base O favor the right side with compound III being the most stable base Ofavor the left side with compound I being the most stable base O favor the left side with compound II being the most stable base

The dissociation equation for aluminum sulfate would be correctly written as O Al SO s Al aq SO aq O Al2 SO4 3 S Al2 SO4 s Al2 SO4 3 s 2Al aq 3SO aq O Al2 SO4 3 S 2Al s 3S0 s

For each of the following molecules predict the product that would form upon reaction of a single equivalent of a strong base Part E OH LOH Draw the molecule on the canvas by choosing buttons from the Tools for bonds and ch toolbars including charges where needed H 12D EXP CONT H C N O

Draw a resonance structure that places a pi bond in a different position Include all lone pairs in your structure I 0 0 H C

1 Draw the structures of each of the compounds used in this experiment and identify each the functional groups in each compound Compound Benzoic acid Vanillin Mandelic acid trans Cinnamic acid

2 Complete the balanced equation for the following reaction Write the total ionic and net ionic equation Include states 5 marks CuSO3 aq HNO3 aq TIE NIE 3 A student makes a solution by dissolving 17 21 g of sodium phosphide in 250 mL of distilled water a Write the dissociation equation for sodium phosphide in in water 1 mark

During a reaction the pH of a solution changes from pH 9 to pH 6 Compared to the original pH the final pH is O1000X more acidic 30X more acidic 3X more basic 30X more basic 1000X more basic 3X more acidic

Identify the spectator ions for the reaction below 2Na aq 2Cl aq Cu aq SO4 aq 2Na aq SO4 aq CuCl2 s 2 Na aq 2Cl aq Cu aq SO4 aq 1 poin CuCl2 s

Which of the following statements are FALSE O An aqeous solution may have polar molecules dissolved in water O An aqueous solution may have non polar molecules dissolved in water O An aqueous solution is a solution with water as a solvent O An aqueous solution may have ions dissolved in water Choose all statements that are TRUE The solute is the smaller component of a homogeneous solution The solvent is the smaller component of a homogeneous solution Neither the solute or solvent is larger in a homogeneous solution The ratio of solvent and solute varies depending on the conditions

Which of the following is true when sodium acetate CH3COONa dissolves in water Select all correct answers O The formula unit separates into individual atoms of carbon hydrogen oxygen and sodium The formula unit remains intact O Water molecules overcome the forces between the ions The formula unit separates into individual atoms

Identify the molecules that would form aqueous solutions from the list below Check all that apply H O formaldehyde ammonia C H H N H H 0 c 0 carbon dioxide H H C C ethylene H 1 poin H

13 Consider the following reactions and approximate free energy changes Xa 0 Xa CO XaCO Xa0 What would be the value of AG for the following reaction XaO CO XaCO 0 X A 60 kJ B 10 kJ AG 70 kJ AG 80 kJ C 40 kJ D 150 kJ

Draw the major addition product for this reaction Do not include any byproducts formed HBr 1 equiv 80 C Br Edit Major Product

1 The image below represents the solubility of a compound in water Which of the following trends would the solubility curve possibly represent Solubility X 1 g 100g water 0 35 0 3 02 015 01 105 0 10 40 The solubility of gases with increasing temperature The solubility of solids with increasing temperature The solubility of gases with increasing pressure The solubility of solids with increasing pressure

Part A Rank the following carbocations from most stable to least stable Carbocations like radicals are electron deficient Rank from most stable to least stable To rank items as equivalent overlap them CH3 Reset

Which of the following is a wedge and dash structure for the following Newman projection CH3 Br Br 01 O II Br H Br Br H CH3 BU Br Br Br IV

In a titration what is the name for the theoretical point when the number of moles of H equals the number of moles of OH O neutralization point O equivalance point O end point titration point Which of the following ions would not make a precipitate with the CO3 ion Na OPb Mg O Al

Which of the following electromagnetic radiation has the lowest energy Ogamma rays Ovisible light Ox rays infrared light

11 11 Identify reagents that can be used to achieve each of the fol lowing transformations Br you OH OH Br x LOH Br you 4 OH OH

17H51 NH OH Ot Paclitaxel Taxol HO OH

1s T 1s 1s Ols 1s 2s 2s 2s 2s 2s 2p 2p 2p 2p 2p

RACTICE How would the following events affect the rate of the following general reaction Increase reaction rate A BC ABC Decrease reaction rate increasing the temperature increasing the concentration of BC

Which of the following is NOT a cyclic molecule x 1 C6H6 2 C2 H4 CLU

AlCl3 AgNO3 Al NO3 AgCl If 30 7 g of aluminum chloride is reacted with 90 5 g of silver nitrate which reactant is limiting and which is excess What mass of the excess reactant is used in the reaction and what mass of the excess reactant remains after the reaction

4 Compound A reacted with the acetylide B to give product C The reaction rate observed was 5 10 4 M s when the concentrations of A and B were 0 25 M and 0 2 M respectively Br Na Ph

Draw the possible 1 2 and 1 4 addition products formed when this diene reacts with Cl2 Do not include any byproducts formed Cl2 1 equiv Draw 1 2 Product

Br benzophenone Mg Et 0 anhydrous OH OMgBr o o o of cfo MgBr MgBr Et 0 anhydrous HCI tripheny Imethanol

H C CH3 H3C CH CH O CH CH3 NO2 CH3 CH3 NO

Choose the correct name for the molecule CH C CH CH CH CH CH3 1 4 ethyl 4 pentene 2 2 propyl 1 butene 3 2 ethyl 1 pentene 4 2 propyl 2 pentyne

Give the correct name for the compound CH3 1 CH3 C CH CH CH CH3 CH3

Identify the element that corresponds to the orbital diagram O Ne O Si OC O AI Create the orbital diagram for sodium Energy 3p 3s 2p 25 1s S 000 Answer Bank 1s 2s 2p 3s 3p 3p 3s 2p 2s 1s

For each pair of alkyl halides select the one that will undergo an E1 reaction more rapidly pair 1 pair 2 pair 3 pair 4 Br Br Br Br VS VS VS VS Br Br Br Br

Which one s is are chiral Upload the answer with the model of the chiral molecule or one of them if more than one 3

alculate the change in enthalpy AH for the quation below O2 g O Oxygen O cuestes 6141715709 0 0 0 0 O F O Si 203 g O P O CI 0 1 O218 kJ mol O 140 kJ mol O 218 kJ mol O1136 kJ mol 140 498 160 370 350 205 200 Ozone 10

Write and the major product for each of the following reactions Are these reactions stereospecific i e the stereochemistry of teh products depends on the stereochemistry of the reactants Explain Are the reactions Stereoselective I e one stereoisomer is produced preferentially Explain H3C H C Br Br CH3SNa acetone CH3SNa acetone

Which of these graphs shows an endothermic reaction A B Energy Sway O OB OA Reartas OD Produts O Both A and D are correct OBoth B and C are correct Pradiati Reacters Apartavis

Name the compound Draw its Fischer projection OH

What epoxide is expected to be the major product from the following reaction sequence 1 H Lindlar s Catalyst 2 Cl H O 3 NaOH 2000 K OI and II None of the choices are correct only I O only II O III OO

How many total valence electrons are in poy 3 Draw it s Stick Structure Number of bonding pairs Number of nonbonding Pairs Draw it s 3D Structure

M Ch What is the name of the following compound CH3 H3C C CH CH3 CH O 3 3 dimethylbutane O 2 2 dimethylbutane O 2 2 dimethylpentane O 2 2 methylpentane

A voltaic cell is constructed based on the oxidation of zinc metal and the reduction of silver cations Solutions of silver nitrate and zinc nitrate also were used Label the silver and silver nitrate on the schematic a Zinc b Silver d Silver nitrate c Silver d Silver nitrate b Silver b Silver nitrate a Silver d Silver nitrate a d C

M Ch What organic class does the following molecule belong to 0 CH3CH CH CCH CH3 O carboxylic acids O aldehydes Oesters ketones

M Cl OH provide IUPAC for BOTH molecules Br