Organic Chemistry Answers

What is the concentration of NO gas at equilibrium if you mix 0.20 mol of N 2 and 0.15 mol of O 2 in a 1.0 L

container at 2000 °C? The K c for the reaction at 2000 °C is .

N 2 + O 2 > 2NO

What would be the equilibrium pH if 200 milligrams of Hydrofluoric acid (HF) were dissolved in 1 liter of

solution? The pK a for the acid is equal to 3.2. (Hint: Convert pKa to Ka)

HF <-- -> H + + F

how do I get pthalonitrile from nitrobenzene?

19 The catalyst required for the hydrogenation of unsaturated hydrocarbons at moderate temperature and pressure is__________
Palladium
Nickel
Vanadium v Oxide
Iron
20 1-hexyne can itself be converted into an alkynide anion, and can be alkylated a second time to yield an __________ alkyne.
interim
internal
terminal
external

16 The following are methods of preparation of acetylene EXCEPT ___________.
Acylation of ethyne
Alkylation of ethyne
Dehydrohalogenation of dihalides
Dehalogenation of tetrahalide
17 The lobes of
Sp3
Sp3
are separated by ________
Orbital
Node
Antinode
None of the above
18 The number of hybrid orbitals generated is determined by __________ combined.
Number of shells
Number of protons
Number of atomic orbitals
Number of electrons

13 The functional group contained in the compound CH2=CH2 is an
ether
ester
alkene
alkane
14 The molecular formula of __________ fit the general formula (CnH2n-2).
Alkynes
alkanes
alchohols
alkenes
15 Terminal alkynes on hydroboration give _________.
Alkanes
Ketones
Alkyl halides
Aldehydes

10 ______________ rule, which states that addition of a hydrogen halide to an unsymmetrical alkene takes place in such a way that the negative part of the reagent goes to that carbon atom of the alkene which carries the lesser number of hydrogen atoms.
Saytzeff
Fischer
Clemmensons
Markinowoffs
11 In theIUPAC system of nomenclature, aldehydes are named as _________________.
Ethers
Alkanals
Alcohols
Ketones
12 The reaction of propane with bromine is called?
Elimination
Addition
Halogenation
Oxidation

7 In __________ reactions of alkene, the pie -bond is broken and the electron pair comprising it, is used in the formation of two new sigma bonds.
Substitution
Addition
Elimination
Oxidation
8 Dehydrohalogenation follows ____________ rule which says that the more highly substituted alkene is the dominant product.
Markinowoffs
Clemmensons
Saytzeff
Fischer
9 In ____________ reaction, a conjugated diene is treated with an unsaturated compound called the dienophile (diene-lover) to yield, a cyclic system.
Diels-Alder
Retro Diels-Alder
Wittig
Wurtz

4 Synthetically, alkenes are prepared by introducing a double bond in saturated hydrocarbons through _____________of atoms or groups from two adjacent carbon atoms.
substitution
elimination
addition
Oxidation
5 Which of the following statements regarding alkanes is not true
Alkanes are non-polar molecules
Alkanes are soluble in water
Alkanes experience dispersion forces
Alkanes have low boiling points
6 _______________reaction is applicable to aldehyde andketones and leads to replacement of carbonyl oxygen by the group=CRR’ (where R and R’ are hydrogen or alkyl group).
Wittig
Wurtz
Sabatier Senderen’s
Fischer-Tropsch

1 ____________is a cleavage reaction, i.e a reaction in which the double bond is completely broken and alkene molecule is converted into two smaller molecules.
Ozonolysis
Pyrolysis
Chelation
Carbonification
2 Treatment of organoboranes with a carboxylic acid leads to___________.
Alkynes
Alkane
Boronc acid
Phenolic acid
3 When an alkene reacts with borane, addition to the carbon-carbon double bond takes place to yield an ______________.
metallo borane
hydroborane
organoborane
dihydroborane