Chapter 16-17 Test Flashcards

1
Q

What do you choose if you see difference

A

Delta H

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2
Q

What symbolizes Delta H

A

If the line does not touch the to or bottom

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3
Q

When you see CAT (Catalyst) look for what?

A

Act (Activation Energy)

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4
Q

When you see ACT (Activation energy) look for what?

A

CAT (Catalyst)

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5
Q

If you see the word collision as an answer what do you do?

A

PICK IT!!!!!!!!!!!

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6
Q

What happens if you see an answer is Powder?

A

PICK IT!!!!!!!!!!!

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7
Q

If you see equilibrium what should you think?

A

Equal Rate

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8
Q

If the line touches the top what kind of energy is it?

A

Activation

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9
Q

If the line touches the bottom line what energy is it?

A

Potential Energy

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10
Q

The only things that can affect rate are

A

Temperature, Composition, Surface Area, Pressure, Nature of reactant Volume, Catalyst

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11
Q

Opposite affect on rate

A

Activation Energy and Volume

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12
Q

Equation for equalibrium expression

A

Puerto Rico
P (Product)
——————
R (Reactant)

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13
Q

Describe an Exothermic Graph

A

Starts high, goes up a bit and around a bit then falls a lot and then goes straight to the right

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14
Q

Describe an Endothermic Graph

A

Starts lower, goes up a lot and around a little then goes straight to the right

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15
Q

The Heat of Reaction (Delta H) is equal to the what?

A

Heat Content of the Products Minus the Heat Content of the reactants

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16
Q

If the graph gives you two numbers what do you do with them?

A

Subtract them

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17
Q

If you see increase circle what?

A

Increase

18
Q

If you see decrease circle what?

A

Decrease

19
Q

A(g) + B(g) —> C(g)

As the Concentration of A(g) increases the frequency of collisions of A(g) with B(g) do what

A

Increase

20
Q

What is the Activated Complex

A

Goes from highest point to bottom (Must touch top and bottom)

21
Q

In a gaseous system, temperature remaining constant, an increase in pressure will

A

Increase reaction rate

22
Q

In a gaseous system, temperature remaining constant, a decrease in pressure will

A

Decrease reaction rate

23
Q

As the surface area of the Zn(s) used in the reaction Zn(s) + 2HCl(aq) ——-> ZnCl2(aq) + H2(g), is increased, the rate of the reaction will

A

Increase

24
Q

The addition of a catalyst to a reaction will cause a change in the

A

Activation Energy

25
Q

Which pair of changes would indicate that a reaction is endothermic but occurs spontaneously

A

a Positive H and Negative G

26
Q

A chemical reaction will always occur spontaneously if the reaction has a

A

Negative G

27
Q

BaSO4(s) Equilibrium (=) Ba^2+(aq) + SO4^2-(aq)
As the concentration of the SO4^2- ions is increased, at a constant temperature the constant temperature, the concentration of Ba^2+ ions

A

Decreases

28
Q
AgCl Equilibrium (=) Ag+(aq) + Cl-(aq) 
As the concentration of the Ag+ ions increased, at a constant temperature the concentration of the Cl- ions
A

Decrease

29
Q

CH3COOH(aq) + H2O(l) Equilibrium (=) H3O+(aq) +CH3COO-(aq)

The addition of what ion will cause a decrease in the concentration of CH3COO-(aq)

A

H30+

30
Q

N2(g)+3H^2 Equilibrium (=) 2NH^3(g) + heat

Which change favors the formation of ammonia

A

Increase of N2(g)

31
Q

If you see the word pressure in a question what should you do?

A

Add the gasses

32
Q

2SO^2(g) + O^2(g) Equilibrium 2SO^3(g)

As the pressure is increased at a constant temperature, the number of moles of SO^3(g) produced will

A

Increase

33
Q

2A(g) + B(g) + 10kcal Equilibrium (=) C(g)

Which conditions would the yield the most product

A

High temperature and high pressure

34
Q

What are the only two things that can go into a equilibrium expression?

A

Gases and aqueous solution

35
Q

What is the equilibrium expression for the reaction

3A(g) + B(g) Equilibrium (=) 2C(g)

A

[C]^2
_______
[A]^3 [B]

36
Q

Equilibrium Equation for

4NH^3(g) + 7O2(g) Equilibrium (=) 4NO^2(g) + 6H2O(g)

A

[NO^2]^4[H2O]^6
_______________
[NH^3]^4 [O^2]^7

37
Q

Whats the only thing that can change the status of K

A

Temperature

38
Q

C(s) +CO^2(g) + heat ——-> 2CO(g)

Which stress on the system would favor the production of CO(g)

A

Increase Pressure

39
Q

If heat is on the left the reaction is

A

Endothermic

40
Q

If heat is on the right the reaction is

A

Exothermic