17 Questions
What happens to the equilibrium when the temperature is increased in the reaction N2O4 + heat ⇌ 2NO2?
The forward reaction is favored.
How does the color of the tube change when the temperature is increased in the N2O4 + heat ⇌ 2NO2 reaction?
It becomes more brown.
According to Le Chatelier’s Principle, what happens if a system at equilibrium is subjected to a stress?
The equilibrium will be displaced to relieve the stress.
What effect does an increase in product have on the equilibrium position?
Shifts to the right.
In the reaction N2O4 + heat ⇌ 2NO2, what happens when the temperature decreases?
Reverse reaction favored.
What effect does the addition of KI have on the solubility of I2 in water?
Increases the solubility of I2
What happens to the solubility of solids in water when the temperature is increased?
Solubility increases
How is the molecular weight of ethylene glycol determined through boiling point elevation?
By calculating the change in boiling point of the solution
What is the concept behind determining the molecular weight through boiling point elevation?
Higher molecular weight causes a greater change in boiling point
In equilibria in chemical reactions, what defines a state of equilibrium?
The rates of forward and reverse reactions are equal
How do stronger solute-solvent interactions impact solubility?
Increase solubility
How does increasing the concentration of Water in the equilibrium 2CrO42– + 2H+ ⇌ Cr2O72– + H2O affect the color of the solution?
Makes it more yellow
How does adding NH4OH to the equilibrium 2CrO42– + 2H+ ⇌ Cr2O72– + H2O affect the concentration of H+ ions?
Decreases it
In the reaction BiCl3 + H2O ⇌ BiOCl + 2HCl, how does increasing the concentration of HCl impact the cloudiness of the solution?
Makes it less cloudy
What happens when you increase the concentration of a reactant in an equilibrium?
Shift to the right (forward reaction favored)
What color change is observed when Water concentration is increased in an equilibrium where Water is a reactant?
Solution becomes less cloudy
When decreasing the concentration of a reactant, what occurs in terms of the equilibrium?
Shifts to the left (reverse reaction favored)
Explore the impact of concentration changes on the equilibrium of the chemical reaction 2CrO42– + 2H+ ⇌ Cr2O72– + H2O. Understand how altering the concentrations of water and NH4OH influences the color change, direction of equilibrium shift, and the formation of products in the reaction.
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