General organic chemistry Questions and Answers

Question 36 What determines how strongly an atom attracts the electrons in a chemical bond electronegativity activation energy pH atomic mass

ensional Analysis 1 Unit Conversions Question 6 Complete the conversion indicated in the image 1 inch 2 54 centimeters Round to two decimal places when necessary 5 05 Enter answer below 5 5 centimeters to inches

A person forms 3 07mol of C4H10 according to the reaction below How much energy in kilojoules was released Use a negative number if energy is released and a positive number if energy is added Round to 2 Decimal Places AH 125 6 4C s 5H2 g C4H10 g kJ mol

5 Starting from benzene propose a multi step synthesis for each of the following compounds 1 point each reaction and no partial credit Hit or miss A Br Br

Draw labelled Newman projections for the least and the most stable bond of that results from rotation of the C2 C3 conformation 2 3 dichlorobutane Draw labelled Newman projections of the two chair conformations of methyl cyclohexane showing the two possible positions of the methyl group Which of these conformations is the more stable

QUESTION 13 A compound is composed of only C H and O The combustion of a 0 519 g sample of the compound yields 1 24 g of CO2 and 0 255 g of H2O What is the empirical formula of the compound A C6H60 B C3H30 C CH3O D C2H605 E C2H602

Equal masses of the 3 substances were left to sit in the sun at the same time and for the same length of time Which of the following substances will experience the smallest change in temperature and why Material Titanium Lithium Nickel J g C 0 544 3 56 0 502

QUESTION 8 In the reaction below is oxidized and 2AgNO3 aq Pb s 2Ag s Pb NO3 2 aq A Ag and N B Ag and Pb C N and Ag D Pb and Ag E Pb and N is reduced

Complete the formula for the correct molecular weights 16 00 g 1 mole 82 98 g Na3N 1 mole 02 132 1 g Ca NO2 2 1 mole 157 9 g P206

eometry Assignment Directions Show work for how you determined the molecular structure No work no credit 1a Draw the stick structure for H S 2a Draw the stick structure for CO2 3a Draw the stick structure for PH3 4a Draw the stick structure for CS2 Molec 5a Draw the stick structure for 03 1b How many bonds and nonbonding pairs are there 2b How many bonds and nonbonding pairs are there 3b How many bonds and nonbonding pairs are there 4b How many bonds and nonbonding pairs are there 5b How many bonds and nonbonding pairs are there 1c Draw its 3D structure 2c Draw its 3D structure 3c Draw its 3D structure 4c Draw its 3D structure 5c Draw its 3D structure 1d Identify its molecular geometry 2d Identify its molecular geometry 3d Identify its molecular geometry 4d Identify its molecular geometry 5d Identify its molecular geometry

OIV OII Br CH OH OH OCH Br OH 66 IV excess HBr heat CH OH Br OH CH Br III CH Br

Identify the reagent s necessary for the following transformation X A mCPBA O H O OH Lindlars Cl enantiomer

Identify the product formed in the reaction shown below OH OH OCH 3 OCH 3 SF SF SF SF H H HO H3CO H3CO HO IV III 1 III CH3OH H SO4 IV

6a Draw the stick structure for SF6 7a Draw the stick structure for BrCl4 8a Draw the stick structure for BrF5 6b How many bonds and nonbonding pairs are there 7b How many bonds and nonbonding pairs are there 8b How many bonds and nonbonding pairs are there 6c Draw its 3D structure 7c Draw its 3D structure 8c Draw its 3D structure 6d Identify its molecular geometry 7d Identify its molecular geometry 8d Identify its molecular geometry

Identify each of the following groups as an activator or deactivator and as an o p director or m director 00 OC O activator deactivator o p director m director NHCH CH3 O activator deactivator Oo p director m director OCH CH3 activator deactivator Oo p director O m director NHC activator deactivator Oo p director Om director

e the following Lewis diagram for propene to answer the questions HHH 2 H member that geometry refers to the geometry defined by the atoms not the e e geometry about atom C is e ideal value of the C C C angle at atom C is Submit Answer e geometry about atom C3 is Retni Entire Group degrees

Which of the following is most basic a b c d

Potassium hydroxide KOH is classified as a n alcohol acid aldehyde base

Which answer has a stable electron configuration O AI Ne O CI Na

Fill in the boxes with correct structures Show stereochemistry aglo com CI OH Cl CHCI3 Cl CH3OH HO HO HO HOI

Chemistry write the product prepared with butanote of 1 1 dimethylethyl

PE kJ 250 200 150 100 50 PEREK what is the change in heat Hp HR Reaction pathway 50 kJ and this graph represents an endothermic reaction 50 kJ and this graph represents an exothermic reaction 50 kJ and this graph represents an exothermic reaction 50 kJ and this graph represents an endothermic reaction Given the equation AH Where Hp represents heat of products and HR represents heat of reactants

SYNTHESIS 7 Synthesize one 1 of the following compounds from the starting material Be sure to show all reac jus ju OH b HO OH OH ol ol OH OH OH OH

Question 20 Magnesium Nitrate Mg NO3 2 contains chemical bonds that are covalent only ionic only both ionic and covalent neither ionic nor covalent

Question 11 Which subatomic particle has a negative charge O proton O alpha particle O electron neutron

Which formula represents a nonpolar symmetrical molecule JAUNUMI IETINING MISURA MYANMERKINIHINNING DREVINE INPUNSUL TREND PRE STEUNEN ENDNUaleset TIGNINGAN BITHONING VINNELING Shoe BURK MITMEL KORS THE TRANSM SHOGACE Fen PETS HOVERPI TIGED PR REELING NH3 Listo H O HCI LARRMSGLES Wilkers kinsontak CH4

Question 24 Which period 4 element has the most nonmetal properties Br Ge As

Given the following unbalanced chemical reaction C3H8 O2 CO2 H O When the equation is balanced what is the coefficient of O 04 3 02 C 5

ing structure in an example of H N CHCCHCO CH3 O a protein O b dipeptide O c hydrocarbons d amino acid CH OH 0

The periodic table is organized by atomic number mass number valence electrons oxidation number

6 Draw a heating curve showing the energy required to raise the temperature of ice from 10 0 C to water at 50 Indicate on the graph potential and kinetic energy changes

The compound XCI is classified as ionic if X represents the element Rb 1 H Br

CH3CH CH NH Mixture can contain A CH3CH CH OH B C D CH3CHCH3 OH Your Answer HNO Both A and B P Mixture

A solution has a H3O of 1 x 1072 M What is the OH of the solution

Question 8 Which answer lists elements in order of increasing atomic radius size F N B Ne Ne Ar Kr Xe l Li B N F Rb K Na Li

Chemistry which one has weak bases Cual de las siguientes solo contiene b debiles ICH3NH2 NH3 IV RbOH AqOH

Given the balanced equation below 4 Al s 2 O g 2 Al O3 s Which type of chemical equation is represented by the reaction synthesis double replacement O decomposition single replacement

Question 14 Which substance can be decomposed by a chemical means oxygen hydrogen carbon dioxide carbon

2 Below is the formula for the line bond or compressed structure of the shapes of molecules called IUPAC please write in the form IUPAC name Molecule Form 2 4 dimethyl 1 3 siklopentadien Z 1 2 difluoro 1 trans 5 ethyl 2 octene hexene cis 1 4 dimetilsiklohekzani

Question 2 Which formula represents a compound 03 Li Cl LiOH

PC15 8 H 2HC When 79 60 g of phosphorus pentachloride reacts with excess water what mass of hydrogen chloride wi produced If needed enter scientific notation with the e For example 1 44 107 would be entered as 1 44e7 Answer 8 HCI

What is the pH of a solution with a 4 19 x 10 M hydronium ion concentration

1 If AH 84 74 kJ for a chemical reaction that reaction O is exothermic O is exponential cannot occur O is endothermic

The vapor pressure of a pure liquid increases as the O average kinetic energy of the molecules in the liquid phase decreases intermolecular attractive forces increase O temperature of the liquid phase increases temperature of the liquid phase decreases

Given the equation at equilibrium N 3H 2NH3 According to Le Chatelier s Principle what would occur when excess H is added to the system equilibrium would shift to the right and N would increase equilibrium would shift to the left and N would decrease equilibrium would shift to the left and N would increase equilibrium would shift to the right and N would decrease

What predominate intermolecular force is in CO O dipole dipole London forces covalent bond hydrogen bonding

Question 7 What is the mass number of an element that has 6 protons 8 neutrons and 6 electrons 14 20 6 2 pts 12

O O 1 If AH 54 74 kJ for a chemical reaction that reaction cannot occur is exothermic is endothermic is exponential

Question 4 Name the following compound KNO3 Opotassium nitride Opotassium nitrate Ophosphorus nitrate Ophosphorus nitrate

Explain the rate of anchimeric assistance when Ar NO C6H4 and CH3C6H4 for the following m 3 HO H H