General organic chemistry Questions and Answers

Which reagent may not be involved in the following multistep conversion HO KMnO4 strong NaOH heat O3 in THF followed by Zn HCI OPCC OH

Dimensional Analysis 2 Molar Concepts Question 5 Select one How many moles of C2H2 are contained in 26 04 grams of C2H2 0 50 mo 2 00 mol 1 50 mol 1 00 mole 319 19 Mn Kay ilma 400 2823hzale 201 Boala

Precisely 0 50 moles of HCl is mixed with 20 liters of water What is the concentration of the resulting solution Select one a 2 5 M b 5 0 M C 0 25 M d Not enough information provided

3 3 Draw resonance structures for the following 15 points a HCO HC b CH CH CH CH3

Choose the best answer for each of the following questions Equal volumes of ideal gases contain the same number of molecules provided the gases have equal masses O pressures O temperatures O temperatures and pressures

1 10 Select one Dimensional Analysis 2 Molar Concepts Question 4 Nitrogen gas has the following chemical formula N 1 How many molecules are 8 8 grams of nitrogen gas 1 89 x 1023 3 78 x 1023 14 01 x 1023 6 02 x 1023 10 n 32 aja HENENDE wall paid we A4 PIEDBE B Pati H Periodic Table of the Elements T Dies size m SA Julz 21 2 81 181 272 BENE Ara HE last 18 18 a FE INC HAN POST vis lil agrop 11 2131 7 H aoult valtalain tt titt alia 15 za Dima 2 0 tall Titit BAPA PER ban Glid 1 15 een lea MAMA bl les te CM2218 CC BY S

Question 3 Provide the missing structure reagents for the following reactions 1 2 3 4 5 La O 1 LIAIH 2 H O 1 2 CH3MgBr 2 H O C KMnO4 H O heat NH COOH

10 What mass of NaOH is required to react exactly with 25 0 mL of 1 2 M H SO4 a 1 2 g b 1 8 g 2 4 g 3 5 g c d 11 Consider the reaction between 15 0 mL of a 1 00 M aqueous solution of AgNO and 10 0 mL of a 1 00 M aqueous solution of K CrO4 When these react a precipitate is observed What is present in solution after the reaction is complete Note the solid is not considered to be in solution a Ag NO K CrO2 water b Ag NOy K water c K CrO2 water d NO K CrO2 water 12 With what volume of 5 0 M HF will 7 4 g of calcium hydroxide react completely according to the reaction 2HF Ca OH 2 CaF2 2H O 1

14 New concept cars in the Detroit Auto Show feature engines that burn hydrogen gas in air to produce water vapor Suppose that fuel tank contains 150 L of H gas at 20 0 atm pressure at 25 C If all of this gas is burned what mass of water vapor is produced Write a balanced chemical equation for the reaction Given Unknown

What is the major contributing resonance structure HO SO Il O III S HO S O all of these structures contribute equally HO

Select one F Dimensional Analysis 2 Molar Concepts Question 9 Which represents the greatest mass of carbon O 1 gram of carbon 1 mole of carbon 1 atom of carbon 1 molecule of carbon

a b d 1 3 marks Provide Names for the following alkanes

Which of the following compounds is most acidic OIV OH IV NH

gas expands from 2 5 L to 8 6 L at a constant temperature If the initial pressure is 1 6 atm what is the final press a 47 1 atm Ob 465 atm O c 4 7 atm d 5 5 atm Oe 13 4 atm

Choose the best answer for each of the following question Which of the following is an expression of concentration O molality Omolarity O percent concentration by mass O all of these

What is the major contributing resonance structure HO S HO S O III O all of these structures contribute equally HO III DO

Which of the following compounds is most acidic 11 III OH IV NH

a b c 2 Draw structures for the following Hept 3 yne 3 phenyl 2 2 dimethylhexane 2 bromo 4methylhex 2 ene

What is the molarity of a 500 ml solution containing 1 10 mol NaCl a 0 02M Ob 0 55M Oc 0 45 M O d 2 2 M O e 5 5 M

e f 2 chloro 3 phenylhexane heptane 2 4 diol 2 4 dimethylpent 2 ene

Which of the following violates the rules for curved arrows H HI H No 1 II and IV 01 OI and III None of these I H ZEU IV

4 If the partial pressure of a gas applies force on a liquid what happens to the solubility of the liquid as the gas continues to apply force on the liquid a The solubility of the gas liquid remains the same b The solubility of the gas increases c The solubility of the gas cannot be determined d The solubility of the gas decreases tapyloa wintin oma galers guressioni d

What is the volume of 0 4 moles of a gas with a pressure of 103 2 kPa and a temperature of 25 C a 1 15 L b 81 L Oc 9 6 L d 104 L

Question 10 1 point How many moles of H O can be produced from 26 15 moles of O Round your answer to two digits after the decimal point 2CH2 50 2H CHgO 2H O Your Answer

Which species is are an unlikely intermediate s in the reaction below 1 OH OH 2 neither 3 nor 4 is likely O neither 2 nor 3 is likely O neither 1 nor 4 is likely O neither 1 nor 2 is likely O 1 is unlikely OH H O 3 O O F 4 D H

Which of the following contains the smallest sized particles mixed into the medium suspension O solution colloid O heterogeneous mixture

a OH b d 6 6 6 6 C H NH S OH F O C F SH OH i NH F C H OH

Shown below are four student drawings of carbocations Rank these structures from least stable to most stable If any structure could not be formed at all rank it least stable J L K J M M K L J K J L M K L J M K M

What is the volume of 1 8 moles of a gas with a pressure of 102 kPa and a temperature of 45 C a 6 6L Ob 47 L O c 46 6 L O d 4 8 L O e 4 71 L

Write out the dissociation for the following compounds Please remember ionization occurs to give metal and non metal ions Dissociation Equations Worksheet 1 AgCl 2 NaOH Ag Cl Nat OH 3 AL SO 72A1 3 3804 4 CaCO Cq 2 C03 2 5 Na SO 6 KCI 7 MgBr 8 FeSO 9 Cu 0 10 PbCl 11 FeCl 12 Ca NO 13 Fe O 14 ZnCl 15 K CO Predict if the following with dissolve in water 1 NaCl 2 C H O 3 Oil 4 K CO

Examine the following compound and rank the indicated hydrogens from most acidic to least acidic A B 2 1 3 4 1 4 2 3 C 1 2 3 4 D E 4 1 2 3 1 2 4 3 1 HO

Calculate the molarity of a solution that has 0 42 mol of table salt NaCl dissolved in enough water to make 0 90 L of solution Record your answer to 3 digits after the decimal place Your Answer Answer

Which of the following compounds are aromatic Select all that apply Select all that apply A 1 B 2 C 3 D 4 H Te N H H N HIN N H

D b d OH 8 8 C H NH S OH O F OH SH i ord ord F NH F C H F LL OH

If the following molecule was treated with one molar equivalent of NaOH which proton would predominantly be removed A B C D 1 2 3 4 H O F F O 2 H H

Provide the correct systematic name for the compound shown here CH3 CH C 0 CH3 propan ethyl methan ethan propyl methyl oate ester one

10 points Nuclear stability prediction 2C is 6 252 Es is 99 10 points Complete the following balanced equation Hint You may need to check the per table 81 Br 81 Rh 0 77 Se 36 Kr 34 Se 81 Kr

Order the following ions from strongest to weakest base 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 Strongest base Second strongest Weakest base 1 HO S O1SIO O 0 Compound 1 2 Compound 2 Compound 3 O I o 3 O O 0

Which process occurs when water is broken down by electrolysis into oxyger and hydrogen O decomposition O precipitate O reactivity combustibility D

is requ and this equation Q mLvapor Substance Aluminum Copper Gold Helium Lead Mercury Water OA 4730 kJ B 207 kJ Latent Heat Fusion melting kJ kg 400 207 62 8 5 2 245 11 4 to vaporize 2 kg of copper Use the table below 335 Melting Point C 660 1083 1063 270 327 39 0 Latent Heat Vaporization boiling kJ kg 1100 4730 1720 21 871 296 2256 Boiling Point C 2450 2566 2808 269 1751 357 100

1027 Party Hope hot De Depot Pra Per 12 Ca Chine Pype here to search NaCl The New E BAU H20 Mal Racin Vene p AAA 4E E3 39 A A Pergun Adi Ate AaBbc Act AaB He Healing Henday

LSD is a common recreational drug known for its hallucinogenic property Which atom of this drug would be the most basic A a B b C C D d E e A NA B D

Which property is described in each case a Gold is shiny b Aluminum floats on water c Carbon does not allow electricity to flow through it d Chlorine dissolves in water e Magnesium burns in oxygen

Match the structure with the correct description based on Huckel s Rules I 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 Aromatic Non Aromatic Anti Aromatic

Identify the stereochemistry of each double bond labeled 1 and 2 in the following structures E or Z A B C 1 E 2 E 1 E 2 Z 1 Z 2 E 1 Z 2 Z D 1 1 2 O

Match the following molecules with their right function 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 1 2 3 4 1 stronger base weaker acid weaker base stronger acid III

Determine the predominant form of this molecule at a pH 7 A 1 B 2 C 3 C I

What is the most stable chair conformation of the 4 methoxy 1 2 dimethylcyclohexane structure given below A B C a b C D d OCH3 H C CH3

Dimensional Analysis 2 Molar Concepts Question 4 How many atoms are in 1 20 moles of copper Select one O O 6 02 x 1023 1 20 x 1023 5 02 x 1023 O 7 22 x 1023

hydrocarbon Which of the following explains why that is A B D E The carbon atoms of cyclopentadiene are all sp hybridized Cyclopentadiene is aromatic Removal of a proton from cyclopentadiene yields an aromatic anion Removal of a hydrogen atom from cyclopentadiene yields a highly stable free radical Removal of a hydride ion from cyclopentadiene produces an aromatic cation