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Equilibrium Position
Definitions/Rules
Equilibrium Expressions
Equilibrium Trivia
Equilibrium Problems
100

The equilibrium shifts right when one increases one of this

What is Reactant

100
The state where the concentrations of all reactants and products remain constant with time
What is Equilibrium
100
If this is the forward reaction: aA + bB yields cC + dD. With the lower cased letters being coeffeicients and the upper cased letters being elements; this is the reverse reaction.
What is cC + dD yields aA + bB
100

In this reaction, how can I speed up the reaction without affecting the amounts in the reaction, pressure, or volume?               

H2O + CO <--> H2 + CO2

Add a catalyst

100

At given temperature, Kc = 1.3 x 10^-2 for the Haber Process. Calculate the new K value if the Haber Process is halved.

What is .11

200

The removal of a product leads to this

What is an equilibrium shift to the products or shift right

200
When the balanced equation for a reaction is multiplied by a factor n, the equilibrium constant for the new reaction is this
What is K^n
200
If the forward reaction, with K as the equilibrium constant,is reversed then this is the new equilibrium constant is:
What is 1/K
200
If Q is equal to K then the system is at this.
What is Equilibrium
200

Calculate the Kc value for the reaction N2(g) + O2(g) -> 2NO(g) if the concentration for each individual element is as follows. N2 = .041 M, O2 = 0.0078, and NO = 4.7 x 10^-4.

What is 6.9 x 10^-4

300
If A + B yields C + D. If A is increased, this happens to the rest of the elements. List what happens to B, C, and D.
What is B decreases, C increases, and D increases.
300
If the reaction is aA + bB yields cC + dD. K= ([C]^c [D]^d)/([A]^a [B]^b ) is the
What is the Equilibrium Expression
300

For the balanced equation: aA + bB yields cC + dD

What is Kc= (([C]^c)([D]^d))/(([A]^a)([B]^b ))

300

Where is positive enthalpy written in an endothermic reaction?

Reactants / left side

300

These do not affect Kc.

What is concentration, pressure, and catalyst?

400

If the volume of a container containing this reaction, N2(g) + 3H2(g) yields 2NH3(g), is decreased causing pressure to increase, the equilibrium shifts

What is shifts to the right to decrease the total molecules of gas present

400
These that are involved in a chemical reaction don't have their concentrations included in the equilibrium expression for the reaction
What are solids and liquids
400

These matter phases are the only ones included in the equilibrium expression.

What is gas(es)?

400
If a change is imposed on a system at equilibrium, the position of the equilibrium will shift in a direction that tends to reduce that change
What is Le Chatelier's Principle
400

At a certain temperature, Kc = 9.1 x 10^-4 for the reaction. FeSCN 2+ -> Fe3+ + SCN-. What does this tell us about the position of equilibrium for this reaction and how could we change Kc?

The reaction will favor reactants more so than products.  You would need to change the temperature.

500
If the reaction, N2 + 3H2 yields 2NH3, produced -543 kJ of heat. If the energy is increased, this happens to the equilibrium.
What is the equilibrium shifts left. For an exothermic system, energy is a product. The system will shift to the left to use up the excess energy
500
This process of Ammonia from Nitrogen and Hydrogen is called
What is The Haber Process
500
Balance this equation and determine its equilibrium expression: Hydrogen + Bromine yields Hydrobromic Acid. All of these elements are gases.
What is ([HBr]^2)/([H2][Br2])
500

Name two ways to change the pressure of the system

What is add or remove a gaseous product or reactant, change the temperature or change the volume of the container

500

A <---> B

A starts out with 1 mole. It reacts at 60% a minute.

B starts out with 1 mole. It reacts at 20% a minute.

ROUND TO THE NEAREST TENTH. How long until equilibrium?

2 minutes