Question

I need help quickly. Can someone please check over my answers and tell me if I am correct? I'm on a time limit. I will fan and medal. Even for just attempting.
1.) Molecules involved in a chemical reaction must collide to react. What is this concept called?
(Points : 3)
collision theory (My answer)

entropy

enthalpy

reaction rate

2.) Which of the following equations is used to describe reaction rates?
(Points : 3)
∆H T∆S

∆[reactant or product]/∆time (My answer)

Sproducts Sreactants

pV = nRT

Answer 1

Both your answers for 1 and 2 are right.

Answer 2

3.) What term refers to the difference between the energy of the transition state and the energy of the reactants?
(Points : 3)
energy of entropy

energy of enthalpy

activation energy (My answer)

reaction rate energy

4.) Which of the following factors does not increase the rate of a reaction?
(Points : 3)
decreasing the concentration of the reactants

increasing the temperature of the system

increasing the surface area of the reactants (My answer)

adding an effective catalyst to the system

5.) Adding an inhibitor to a chemical reaction will have which of the following effects on the reaction?
(Points : 3)
The inhibitor will increase the rate of the reaction. (My answer)

The inhibitor will decrease the rate of the reaction.

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

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

6.) What happens to a catalyst as the result of a chemical reaction?
(Points : 3)
It is not consumed.

It slows a chemical reaction.

It is consumed. (My answer)

It changes to something else.

7.) What happens in a reaction if it is at chemical equilibrium?
(Points : 3)
The rate of the forward reaction exceeds that of the reverse reaction.

The rate of the reverse reaction exceeds that of the forward reaction.

The rate of the forward reaction equals the rate of the reverse reaction. (My answer)

All of the products are used up.

Answer 3

3 is right.
For 4, in general, all will increase the rate of reaction, but increasing temperature won't always work - for example reaction something with ethanol, if heated too high the ethanol will evaporate before reacting.
5 - an inhibitor prevents things from occurring, so it would decrease the rate of reaction.
6 - a catalyst is never consumed by the reaction, that's the point of it, it only lowers the activation energy of one or more of the reactants but does not 'react' per se.
7 is also right.

Answer 4

Thank yhu so much. <3 Yhur help is very appreciated.
I'm not sure what 6 would be though. :c

Answer 5

The catalyst is not consumed. It's one of the requirements for something to be labelled a catalyst

Answer 6

Yhu are seriously the best. Thank yhu so much. ^.^

Answer 7

thnx for this