Effect of Concentration Upon Equilibrium

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What happens to the equilibrium when the temperature is increased in the reaction N2O4 + heat ⇌ 2NO2?

The forward reaction is favored. (correct)

The equilibrium shifts to the right.

The equilibrium shifts to the left.

The reverse reaction is favored.

How does the color of the tube change when the temperature is increased in the N2O4 + heat ⇌ 2NO2 reaction?

It becomes colorless.

It becomes darker reddish brown.

It becomes more brown. (correct)

It becomes lighter brown/orange.

According to Le Chatelier’s Principle, what happens if a system at equilibrium is subjected to a stress?

The equilibrium will be relieved from the stress.

The equilibrium will be displaced to relieve the stress. (correct)

The equilibrium is maintained without any shift.

The equilibrium shifts randomly.

What effect does an increase in product have on the equilibrium position?

Shifts to the right. Signup and view all the answers

In the reaction N2O4 + heat ⇌ 2NO2, what happens when the temperature decreases?

Reverse reaction favored. Signup and view all the answers

What effect does the addition of KI have on the solubility of I2 in water?

Increases the solubility of I2 Signup and view all the answers

What happens to the solubility of solids in water when the temperature is increased?

Solubility increases Signup and view all the answers

How is the molecular weight of ethylene glycol determined through boiling point elevation?

By calculating the change in boiling point of the solution Signup and view all the answers

What is the concept behind determining the molecular weight through boiling point elevation?

Higher molecular weight causes a greater change in boiling point Signup and view all the answers

In equilibria in chemical reactions, what defines a state of equilibrium?

The rates of forward and reverse reactions are equal Signup and view all the answers

How do stronger solute-solvent interactions impact solubility?

Increase solubility Signup and view all the answers

How does increasing the concentration of Water in the equilibrium 2CrO42– + 2H+ ⇌ Cr2O72– + H2O affect the color of the solution?

Makes it more yellow Signup and view all the answers

How does adding NH4OH to the equilibrium 2CrO42– + 2H+ ⇌ Cr2O72– + H2O affect the concentration of H+ ions?

Decreases it Signup and view all the answers

In the reaction BiCl3 + H2O ⇌ BiOCl + 2HCl, how does increasing the concentration of HCl impact the cloudiness of the solution?

Makes it less cloudy Signup and view all the answers

What happens when you increase the concentration of a reactant in an equilibrium?

Shift to the right (forward reaction favored) Signup and view all the answers

What color change is observed when Water concentration is increased in an equilibrium where Water is a reactant?

Solution becomes less cloudy Signup and view all the answers

When decreasing the concentration of a reactant, what occurs in terms of the equilibrium?

Shifts to the left (reverse reaction favored) Signup and view all the answers

Effect of Concentration Upon Equilibrium

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