mod 6 ch 6

Question 1

addition reactions

Answer 1

• two reactants combining to form a single product
• decrease in pi bonds

Question 2

elimination reactions

Answer 2

• single reactant splits into two products
• increase in pi bonds

Question 3

substitution reactions

Answer 3

• two reactants exchange parts to form product
• no change in pi bonds

Question 4

rearrangement reactions

Answer 4

• single reactant yielding an isomeric product
• groups, bonds, and atoms were rearranged
• no change in pi bonds

Question 5

what kind of arrow is this

Answer 5

reaction arrow

Question 6

what kind of arrow is this

Answer 6

equilibrium arrow

Question 7

what kind of arrow is this

Answer 7

resonance arrow

Question 8

what kind of arrow is this

Answer 8

curve full arrowhead (2e-)

Question 9

what kind of arrow is this

Answer 9

curve half arrowhead (1e-)

Question 10

what are Br2 and CCl4

Answer 10

• Br2 is the reacting agent or reagent
• CCl4 is the non reacting solvent

Question 11

how does this reaction take place

Answer 11

Question 12

what does this show

Answer 12

• heterolytic or unsymmetrical breaking of bonds
• two bonding electrons stay with one product

Question 13

what does this show

Answer 13

• heterolytic or unsymmetrical breaking of bonds
• two bonding electrons are donated by one reactant

Question 14

carbon usually accepts a partial positive charge when it is connected to another atom except when that atom is

Answer 14

Mg or Li

Question 15

nucleophile

Answer 15

electron rich species that donates electron pairs to electrophiles in polar forming reactions (Lewis Base)

Question 16

electrophile

Answer 16

substances that accept electron pairs from a nucleophile (Lewis Acid)

Question 17

electrons move from a __________ ________ to an ____________ _______

Answer 17

• nucleophilic source
• electrophilic sink

Question 18

no matter how many arrows are draw in sequence, the only atoms with changes in charges should be

Answer 18

• the initial “tail”
• the final “head”

Question 19

exergonic

Answer 19

• ▲G < 1
• PRODUCTS ARE FAVORED

Question 20

endergonic

Answer 20

• ▲G > 1
• REACTANTS ARE FAVORED

Question 21

between the reactants and products there is ___ ___________ in formal charge

Answer 21

no change

Question 22

Gibbs free energy is represented by

Answer 22

▲G

Question 23

what is the equation for ▲G

Answer 23

▲G = G products - G reactants

Question 24

exothermic

Answer 24

• heat is released
• ▲H < 0

Question 25

endothermic

Answer 25

• heat is absorbed
• ▲H > 0

Question 26

the smaller the activation energy

Answer 26

the faster the reaction

Question 27

transition state

Answer 27

• point at which your compound is in the process of transformation
• highest energy point in a reaction step (TOP OF HILL)

Question 28

activation energy

Answer 28

the energy required to go from reactant to transition state

Question 29

reaction intermediate

Answer 29

species that are neither the reactant or the final product (the ditch between the hills)