95 Questions
Which of the following is true about the concentration of [A]₂ in experiment 3 compared to experiment 1?
The concentration of [A]₂ in experiment 3 is four times that in experiment 1.
What is the value of x in the formula Rate = k [A]x[B]y?
2
What is the value of y in the formula Rate = k [A]x[B]y?
1
What is the value of k in the formula Rate = k [A]x[B]y?
2.5x10⁶ M-²/min
Which of the following is NOT an observable property that can be used to determine the rate of a reaction?
Change in activation energy
Which of the following is true about the initial rate of [A]₁ in experiment 3 compared to experiment 1?
The initial rate of [A]₁ in experiment 3 is 4 times higher than in experiment 1.
Which of the following is true about the concentration of [B]₃ in experiment 3 compared to experiment 1?
The concentration of [B]₃ in experiment 3 is 3 times higher than in experiment 1.
Which of the following is the correct formula for the rate of reaction?
Rate = k [A]²[B]
Which of the following is true about the activation energy?
Activation energy is the energy required to activate a reaction.
Which of the following is NOT an example of an observable property that can be used to determine the rate of a reaction?
Change in intensity of the color of the reactant
Which of the following is true about the initial rate of [A]₁ in experiment 3 compared to experiment 2?
The initial rate of [A]₁ in experiment 3 is three times greater than in experiment 2.
Which of the following is true about the initial rate of [B]₁ in experiment 3 compared to experiment 2?
The initial rate of [B]₁ in experiment 3 is twice as great as in experiment 2.
What is the value of k in the formula Rate = k [A]x[B]y?
$2.5x10^6$ M-²/min
What is the value of x in the formula Rate = k [A]x[B]y?
2
What is the value of y in the formula Rate = k [A]x[B]y?
1
Which equation can be used to calculate the change in entropy (ΔS) of a reaction?
ΔS = Σ[n(ΔS)]products - Σ[n(ΔS)]reactants
Which of the following statements is true about the sign of ΔS in a spontaneous process?
ΔS is positive
Which equation can be used to calculate the change in Gibbs free energy (ΔG) of a reaction?
ΔG = Σ(ΔG)products - Σ(ΔG)reactants
What is the change in Gibbs free energy (ΔG) of the reaction CO(g) + H₂O(g) --> CO₂(g) + H₂(g) at 25°C?
-28.6 kJ
Is the reaction CO(g) + H₂O(g) --> CO₂(g) + H₂(g) spontaneous at 2000 K?
No
Which equation can be used to calculate the change in entropy (ΔS) of a reaction?
ΔS = Σ[n(ΔS)]products - Σ[n(ΔS)]reactants
Which of the following is true about the sign of ΔS in a spontaneous process?
ΔS is positive
What is the value of ΔG°reaction for the reaction CO(g) + H₂O(g) --> CO₂(g) + H₂(g)?
-28.6 kJ
What is the value of ΔH for the reaction CO(g) + H₂O(g) --> CO₂(g) + H₂(g)?
-41.17 kJ
Is the reaction CO(g) + H₂O(g) --> CO₂(g) + H₂(g) spontaneous at 2000 K?
No
Which equation can be used to calculate the change in Gibbs free energy ((\Delta G)) of a reaction?
(\Delta G = \Delta H - T\Delta S)
What is the value of (\Delta G^{\circ}_{\text{reaction}}) for the reaction CO(g) + H₂O(g) --> CO₂(g) + H₂(g)?
-28.6 kJ
Which of the following is NOT an observable property that can be used to determine the rate of a reaction?
Volume
Which of the following is true about the sign of (\Delta S) in a spontaneous process?
The sign of (\Delta S) depends on the specific process
What is the value of (\Delta H) for the reaction CO(g) + H₂O(g) --> CO₂(g) + H₂(g)?
-41.17 kJ
Which of the following is true about equilibrium?
Equilibrium is the state where the concentration ratio of the products to the reactant is constant.
Which of the following is true about dynamic equilibrium?
Dynamic equilibrium exists if the opposing reactions occur continuously until an external force is applied to stop the reactions.
Which of the following is true about Le Chatelier’s principle?
Le Chatelier’s principle states that when a chemical in equilibrium is disturbed, it reacts toward the direction of the reaction that will lead the system toward re-attainment of equilibrium.
Which of the following is true about the equilibrium constant, K?
The value of the equilibrium constant, K, indicates the extent to which a reaction proceeds completion.
Which of the following is true about a system in equilibrium?
For a system in equilibrium at any given temperature, the concentration ratio of products to reactants is constant.
Which of the following is true about equilibrium?
Equilibrium is the state where the concentration ratio of the products to the reactant is constant.
Which of the following is true about dynamic equilibrium?
Dynamic equilibrium exists if the opposing reactions occur continuously until an external force is applied to stop the reactions.
Which of the following is true about Le Chatelier’s principle?
Le Chatelier’s principle states that when a chemical in equilibrium is disturbed, it reacts toward the direction of the reaction that will lead the system toward re-attainment of equilibrium.
Which of the following is true about the value of the equilibrium constant, K?
The value of the equilibrium constant, K, indicates the concentration ratio of the products to the reactants at equilibrium.
Which of the following is true about a system in equilibrium?
A system is in equilibrium when the rates of the forward and backward reactions are equal.
Which of the following is true about the equilibrium constant, K?
K is constant for a given reaction at a specific temperature
Which of the following is true about dynamic equilibrium?
Dynamic equilibrium is the state where the concentration ratio of the products to the reactants is constant
Which of the following is true about Le Chatelier’s principle?
Le Chatelier’s principle states that when a chemical in equilibrium is disturbed, it reacts toward the direction of the reaction that will lead the system toward re-attainment of equilibrium
Which of the following is true about a system in equilibrium?
A system is in equilibrium when the rates of the forward and backward reactions are equal
Which of the following is true about the value of the equilibrium constant, K?
The value of K is constant for a given reaction at a specific temperature
Which of the following is true about the strength of an acid and its conjugate base?
The strength of an acid and its conjugate base are inversely proportional.
What is the relationship between Ka and Kb?
Ka and Kb are inversely proportional.
What is the equation for the ionization of a weak monoprotic acid, HA?
HA + H2O(l) -> H3O+(aq) + A-
What is the formula for calculating the value of Ka for a weak acid?
Ka = [H3O+] / [HA]
What is the formula for calculating the value of pKa for a weak acid?
pKa = -log[Ka]
Which of the following is true about the ionization constant, Ka, for a weak acid?
Ka is a measure of the strength of a weak acid
Which of the following is true about the ionization constant, Kb, for a weak base?
Kb is a measure of the strength of a weak base
Which of the following is true about the relationship between Ka and Kb?
Ka and Kb are inversely proportional
Which of the following is true about the pH scale?
pH is the negative logarithm of the hydrogen ion concentration
Which of the following is true about buffers?
Buffers can resist changes in pH
Which of the following is true about the strength of a weak acid and its conjugate base?
The strength of a weak acid is less than its conjugate base.
What is the formula for calculating the value of Ka for a weak acid?
Ka = [H₃O⁺][HA]/[A⁻]
What is the relationship between Ka and Kb?
Ka and Kb are inversely proportional.
Which of the following is true about buffers?
Buffers consist of an acid and a base that differ by the presence or absence of a proton.
What is the equation for the ionization of a weak monoprotic acid, HA?
HA + H₂O(l) ⇌ H₃O⁺(aq) + A⁻
Which of the following ions is insoluble in water?
Cu²⁺
What is the isoelectric point (pI)?
The pH at which a molecule carries no net electric charge.
What happens to a protein below its isoelectric point (pI)?
It carries a net positive charge.
What is the technique called when proteins are separated based on their isoelectric point?
Isoelectric focusing
What happens to a protein when it reaches its isoelectric point (pI) during isoelectric focusing?
It carries no net electric charge and stops moving.
Which of the following ions is insoluble in water?
Cu²⁺
What is the isoelectric point (pI)?
The pH at which the net charge is neutral.
What happens to a protein below its isoelectric point (pI)?
It carries a net positive charge.
Which equation can be used to calculate the change in Gibbs free energy ((\Delta G)) of a reaction?
(\Delta G = \Delta H - T \Delta S)
Which of the following is true about buffers?
Buffers resist changes in pH.
Which of the following is true about the solubility of copper carbonate (CuCO₃)?
Copper carbonate is insoluble in water.
Which of the following ions is soluble in water?
Cl⁻
What is the isoelectric point (pI)?
The pH at which a solute carries no net electric charge.
What is the technique called when proteins are separated based on their isoelectric point?
Isoelectric focusing
Which of the following ions are soluble carbonates?
K⁺, Na⁺, NH₄⁺
Which of the following ions is insoluble in water?
Cu²⁺
What is the isoelectric point (pI)?
The pH at which the net charge of a molecule is neutral.
What happens to a protein below its isoelectric point (pI)?
It carries a net negative charge.
What happens to a protein when it reaches its isoelectric point (pI) during isoelectric focusing?
It becomes focused into sharp stationary bands.
Which of the following ions are soluble carbonates?
Na⁺
Which of the following ions is insoluble in water?
Cu²⁺
What is the technique called when proteins are separated based on their isoelectric point?
Isoelectric focusing
At what pH does a protein carry no net electric charge?
pH equal to the protein’s pI
What happens to a protein below its isoelectric point (pI)?
It carries a net positive charge
Which of the following is true about the solubility of copper carbonate (CuCO₃)?
It is insoluble in water
Which of the following ions is soluble in water?
Cl⁻
What is the technique called when proteins are separated based on their isoelectric point?
Isoelectric focusing
What happens to a protein below its isoelectric point (pI)?
It carries a net negative charge
Which of the following is true about the solubility of copper carbonate (CuCO₃)?
It precipitates out of the solution
What is the isoelectric point (pI)?
The pH at which a molecule carries no net electric charge
Which of the following ions is soluble in water according to the text?
Cl⁻
What is the balanced chemical equation for the reaction between Cu²⁺, CO₃²⁻, Cl⁻, and Na⁺?
2Na⁺ + Cu²⁺ + CO₃²⁻ + Cl⁻ → CuCO₃ + 2Na⁺ + 2Cl⁻
What is the pH at which a solute often has minimal solubility and precipitates out of the solution called?
Isoelectric point
What technique is used to separate proteins based on their isoelectric point?
Isoelectric focusing
What happens to a protein when it reaches its isoelectric point during isoelectric focusing?
It stops moving in the gel
Test your knowledge of Chemical Kinetics with this quiz! Explore concepts such as reaction rates, activation energy, and the nature of substances. Perfect for anyone studying physical chemistry or interested in understanding the rates of chemical reactions.
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