RedOx and Equillibria

Man of Steel (22:03)

100

What is the oxidation number for Cl in Cl₂?

0

200

The species that gets reduced in order to facilitate an oxidation in another is called the what?

Oxidizing agent

300

What is the name of the reaction in which the same species is both oxidized and reduced?

Disproportionation

400

What is the oxidation number of Mn in the molecule 

KMnO₄

+7

500

What is the reducing agent in the following equation?

2CuSO₄ + 4KI  -> 2CuI + I₂ + K₂SO₄

KI

Shift Happens

100

Define Le Chatelier's Principal

If an equilibrium is disrupted by changing conditions, the position of the equilibrium will shift to counteract the change and reestablish equilibrium. 

200

In an exothermic reaction, an increase in temperature will result in a shift in which direction?

Shift to the left toward reactants

300

How does a catalyst affect the position of equilibrium?

Catalysts have no effect on equilibrium.

400

In the production of ammonia, name 2 things we can do to increase the production of ammonia

Decrease temperature ,condense the ammonia, or increase the pressure. 

500

Consider this reaction

CO(g) + H₂O(g)  <=> CO₂(g) + H₂(g)

An increase in pressure will result in what shift in equilibria

No shift

Equillibri-yum

100

What two states of matter do we consider when constructing equilibrium expressions?

Gas and Aqueous

200

In a reaction in equilibrium, a equilibrium constant K_c > 1 means the reaction favors what?

The products (Product favored)

300

Write the equilibrium (K_c) expression for the following equation

2A + B  -> 3C

[C]^3/([A]^2[B])

400

2HI(g)  <=>  I₂(g) +H₂(g)

If there are 1.71 mols of H_2, 2.91 mols of I₂ , and 16.5 mols of HI present at equilibrium and at 100 kPa, calculate the partial pressure of HI

P_HI =78.125 kPa

500

A 1.00 L reaction vessel contains 1.50 moles of hydrogen gas (H₂) and 1.00 mole of iodine gas (I₂). 

H₂(g)+I₂(g)⇌2HI(g)

The equilibrium constant for this reaction is K_c=50.0Determine the equilibrium concentrations of H₂, I₂, and HI.

[H2]=0.61mol dm^-3,[I2]=0.11mol dm^-3,[HI]=1.78mol dm^-3

Your a 10...on the pH scale cuz you're basic.

100

Which of following is a weak acid?

HClO₄

H₂CO₃

HNO₃

H₂CO₃ (Carbonic acid)

200

During a titration, the point where the moles of acid equal the moles of based is called the what?

The equivalence point

300

Which of the reactants is acting as the acid in the reaction?

HOCN + H₂O  -> OCN^- + H₃O⁺

HOCN

400

How do acid base indicators work?

They are usually weak acids in nature an the un-ionized indicator will posses one color while the de protonated or ionized indicator molecule will have a different color.

500

You are titrating HClO₂ with NaOH. What would you predict the pH at the equivalence point would be?

pH>7