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Chemistry 2 > Mulitiple Choice Questions > Flashcards

Mulitiple Choice Questions Flashcards

1
Q

Determine equilibrium direction: add SO3

A

Left

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2
Q

Add catalyst

A

No change

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3
Q

Remove SO2

A

Left

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4
Q

Increase pressure

A

Right

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5
Q

Decrease pressure

A

Right

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6
Q

A half life represents

A

How long it will take for a reaction to split in half

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7
Q

If a reaction has an order of 1 you do what to the reaction rate

A

Double the reaction rate

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8
Q

What step determines the rate law

A

Slow step

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9
Q

If you add more gaseous reactant to a reaction at equilibrium the reaction will shift towards the

A

Left

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10
Q

The reaction is exothermic. What will shift the equilibrium to the left
A. Increase volume
B. Raising the temperature
C. Decrease pressure
D. Adding a catalyst

A

Increasing the volume

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11
Q

Dynamic equilibrium

A

Occurs when a reaction and it’s reverse reaction proceed at the same rate

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12
Q

A catalyst does what to the activation barrier

A

It lowers activation energy barrier so less energy for the reaction

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13
Q

K>1 it favors the

A

Products

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14
Q

K<1 it favors the

A

Reactants

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15
Q

Q>K what does that mean

A

The reverse reaction will will proceed to form more reactants

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16
Q

Q<K what does that mean

A

It will go to form more products ( you can draw it out)

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17
Q

Q=K

A

Your at equilibrium

18
Q

If it’s a liquid there is

A

No change in equilibrium

19
Q

In a endothermic process heat is on the

A

Reactant side

20
Q

In a exothermic process heat is in the

A

Product side

21
Q

Increase of volume goes to the side of more or less moles

A

More moles

22
Q

In an equilibrium question with shifting where does it want to shift to

A

It wants to shift to the side with less stuff to relieve strees

23
Q

How do intermolecular forces affect boiling point

A

stronger IMF require higher energy to distrupt the interaction
- stronger IMF require higher BP

24
Q

List the IMF in increasing strength (low to high)

A

Dispersions, dipole-dipole, Hbonds, ion dipole, covalent, ionic

25
Q

Name 2 parts of a solution

A

Solute and solvent

26
Q

define molaity ( m)

A

Moles of solute/ kg of solvent

27
Q

Define molarity

A

Moles of solute/L of solution

28
Q

For solute solvent interactions does delta H increase or decrease to overcome molecular forces

A

Increase

29
Q

Does increasing temperature increase or decrease the soluability of gases

A

Decrease

30
Q

What type of IMF is due to the attraction of two polar molecules

A

Dipole dipole bonds

31
Q

What type of IMF is due to the attraction of two atoms

A

Dispersion

32
Q

Is the vapor pressure of a solution higher or lower than a pure solvent

A

Lower

33
Q

By adding table salt to water would the boiling point increase or decrease

A

Increase

34
Q

Boiling point is defined as the temperature at which

A

The vapor pressure is equal to the atmospheric pressure

35
Q

Which of the following is true

A

The soluabilty of a solid is highly dependable on temperature

36
Q

Give the reason that antifreeze is added to a car radiator

A

The freezing point is lowered and the boiling point is elevated so that the car radiator doesn’t freeze

37
Q

How to know which hydrocarbon has the highest boiling point

A

Chose the biggest molecule because it needs higher temperature to boil

38
Q

For a solution in a close container at equilibrium which if the following pairs represent a process at equal rate

A

Evaporation and condensation

39
Q

A solution containing more than a maximum amount of solute is called

A

A supersaturated solution

40
Q

Subliming

A

Moving from low to high

41
Q

Condensing

A

Moving from high to low

Chemistry 2 (3 decks)

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