Question

#1: Molecules involved in a chemical reaction must collide to react. What is this concept called?

A. collision theory

B. entropy

C. enthalpy

D. reaction rate

***MY answer: A

what do you think @jim_thompson5910 :)

Answer 1

#2: Which of the following equations attached is used to describe reaction rates?

answer choices attached A,B,C,D from top to bottom :)

***MY answer; B

is that right? :)

Answer 2

#3: What term refers to the difference between the energy of the transition state and the energy of the reactants?

A. energy of entropy

B. energy of enthalpy

C. reaction rate energy

D. activation energy

***My answer; D

is that right? :)

Answer 3

#4: Which of the following factors does NOT increase the rate of a reaction?

A. increasing the concentration of the reactants

B. decreasing the temperature of the system

C. increasing the surface area of the reactants

D. adding an effective catalyst to the system

***not too sure... i'm thinking either B or C... what do u think? :)

Answer 4

1A sounds good

Answer 5

#5: Adding an inhibitor to a chemical reaction will have which of the following effects on the reaction?

A. The inhibitor will increase the rate of the reaction.

B. The inhibitor will initially increase the rate of the reaction and then decrease it.

C. The inhibitor will have no effect on the rate of the reaction.

D. The inhibitor will decrease the rate of the reaction.

***MY answer: D

is that right? :)

Answer 6

okay! yay for #1 :)

Answer 7

not sure about #2, kinda stuck...hmm

Answer 8

oops... forgot.. here are the answer choices for 2 lol :P my bad!

Answer 9

sorry bout that! :P

Answer 10

#3 is D, so you got that right

http://www.rpi.edu/dept/chem-eng/Biotech-Environ/Projects00/enzkin/transition.htm

on that page it says "The energy difference between the reactants and the potential energy maximum is referred to as the activation energy"

Answer 11

ooh! yay :)

Answer 12

for some reason, #4 is B i think because if you lower the temp, then the particles slow down ---> less collisions (and slower collisions) ---> less energy

that's my thinking on it...idk

Answer 13

okay :) sounds good :) thanks!! :D what about 5? :D

Answer 14

to inhibit is to slow down or impede progress (ie restrain or hold back)

so that would make me think an inhibitor would slow down a reaction rate

Answer 15

so D looks right, but there may be more to the story? idk

Answer 16

haha okay :) yay! thanks ;D

Answer 17

haha okay :) yay! thanks ;D