Mark all the statements that are TRUE. You may select one or more. a-Spontaneity for a...
Mark all the statements that are TRUE. You may select
one or more.
a-Spontaneity for a reaction at 45C depends on ∆G not ∆G
standard
b-A large, negative ∆G means that the reaction is fast and
spontaneous
c- ∆G° is zero at equilibrium
d- Increasing the concentration of reactants decrease the value of
∆G
e-∆G standard is always the same for a given reaction
I selected everything but c- ∆G° is zero at
equilibrium. My answer was incorrect.
Homework Answers
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Mark all the statements that are TRUE. You may select
one or more.
a-Spontaneity for a...
Select all of the true statements regarding chemical equilibrium. The concentrations of reactants and products are...
Select all of the true statements regarding chemical equilibrium. The concentrations of reactants and products are equal. The concentrations of reactants and products remain constant. Reactants are being converted to products and vice versa. The rates of the forward and reverse reactions are equal. Write the equilibrium constant expression for the reaction A(s)+3 B() 2C (aq) D(aq) in terms of [A]. [B]. [C], and [D] K = Write the equilibrium-constant expression for the reaction shown in terms of [A]. [B]....
Justify the following sentences by answering (T) for TRUE or (F) for FALSE. (1 mark each)...
Justify the following sentences by answering (T) for TRUE or (F) for FALSE. (1 mark each) AE is independent on the initial and final state of a system. The sum of entropy changes of the system and surroundings is always positive. The ratio of numerical values of partial pressures of the reaction participants is unitless. Q is small if products pressures are small, a large Q means a negative or good (favorable) contribution to the free energy For pure solids...
2. Decide whether each of the following statements is true or false. If false, rewrite it...
2. Decide whether each of the following statements is true or false. If false, rewrite it to make it true. a. Entropy of the universe increases in all spontaneous reactions. wo False If entropy is bw enough it con be spontaneous, b. Reactions with a negative free energy change (A-Gº <0) are product-favored and occur with rapid transformation of reactants to products. True c. An exothermic reaction will always be spontaneous. I NO when AH is negative the reaction can...
1.The spontaneity of system or a biochemical reaction can be determined by: A) Enthalpy alone B)...
1.The spontaneity of system or a biochemical reaction can be determined by: A) Enthalpy alone B) Entropy alone C) Gibbs Free energy D) Temperature and heat 2.A reaction in equilibrium where both forward and reverse reactions are proceeding equally, will have a DELTA G value of: A) Positive B) Zero C) Negative 3.A reaction was originally endergonic, but became exergonic after reducing the temperature. Therefore, this reaction originally had __________ deltaH and a ______ delta S. A) small positive, large...
Decide which of the following statements are True and which are False about equilibrium systems: For...
Decide which of the following statements are True and which are False about equilibrium systems: For the following reaction: CaCO3(s) = CaO(s) + CO2(g) the (CaCO3] appears in the denominator of the equilibrium expression. For the following reaction: H2(g) + F2(g) = 2HF(g) the values of K and Kp are not the same. The value of K at constant temperature depends on the amounts of reactants and products that are mixed together initially. A large value of K means the...
Which of the following statements are true (select ALL that apply) (a) The standard entropy of...
Which of the following statements are true (select ALL that apply) (a) The standard entropy of any compound is greater than 0. (b) For a given compound the entropy of a molecule in the gas phase is higher than in a liquid at the same temperature. (c) In a spontaneous process the entropy of the system always increases (d) In a spontaneous process the entropy of the universe always increases. (e) The reaction entropy is always positive. (f) The standard...
Question 8 2 pts Which of the statements are TRUE? Select all that are true. The...
Question 8 2 pts Which of the statements are TRUE? Select all that are true. The AG of a reaction is negative when Q-K Under standard state conditions, Q is always 1. Under standard state conditions, Q = K. At equilibrium, AG-AG. At equilibrium, AG=0. AG is a measure of how far the system is from standard conditions. The sign on AG indicates the direction a system will proceed to reach equilibrium from any initial conditions. None of the statements...
6. Which of the following statements is not true? A) Bond breaking is endothermic. B) The...
6. Which of the following statements is not true? A) Bond breaking is endothermic. B) The bond dissociation energy for bond breaking is always negative. C) Bond making is exothermic. D) The bond dissociation energy for bond formation is always negative. 37. Using the bond dissociation energies given, calculate AH® for the following reaction. CH,CH -Br + H2O CH,CH-OH + HBr AH KJ/mol Bond A-B CH3CH2-Br H-OH сHCH-он H-Br A) +108 KJ/mol B) -130 KJ/mol C) -22 KJ/mol D) +22...
Which of the following is true regarding ᐃG? (mark all that apply) Group of answer choices...
Which of the following is true regarding ᐃG? (mark all that apply) Group of answer choices When Keq is >> 1, ᐃG is large and negative When Keq is << 1, ᐃG is large and positive When Keq is << 1, ᐃG is small and positive When Keq is << 1, ᐃG is large and negative When Keq is >> 1, ᐃG is small and positive 2-Why is coupling of reactions an important biochemical mechanism to allow non-spontaneous reactions to...
I pts Select all statements that are true about electric potential (voltage). it's a vector it...
I pts Select all statements that are true about electric potential (voltage). it's a vector it depends on the source and not a subject or test charge it can be positive, negative, or zero D only changes in the electric potential are physically meaningful O it is equal to the electric potential energy a conductor in electrostatic equilibrium has the same voltage throughout the interior and surface D it always increases as you move away from any charged object
Select all of the true statements regarding chemical equilibrium. The concentrations of reactants and products are equal. The concentrations of reactants and products remain constant. Reactants are being converted to products and vice versa. The rates of the forward and reverse reactions are equal. Write the equilibrium constant expression for the reaction A(s)+3 B() 2C (aq) D(aq) in terms of [A]. [B]. [C], and [D] K = Write the equilibrium-constant expression for the reaction shown in terms of [A]. [B]....
Justify the following sentences by answering (T) for TRUE or (F) for FALSE. (1 mark each) AE is independent on the initial and final state of a system. The sum of entropy changes of the system and surroundings is always positive. The ratio of numerical values of partial pressures of the reaction participants is unitless. Q is small if products pressures are small, a large Q means a negative or good (favorable) contribution to the free energy For pure solids...
2. Decide whether each of the following statements is true or false. If false, rewrite it to make it true. a. Entropy of the universe increases in all spontaneous reactions. wo False If entropy is bw enough it con be spontaneous, b. Reactions with a negative free energy change (A-Gº <0) are product-favored and occur with rapid transformation of reactants to products. True c. An exothermic reaction will always be spontaneous. I NO when AH is negative the reaction can...
Decide which of the following statements are True and which are False about equilibrium systems: For the following reaction: CaCO3(s) = CaO(s) + CO2(g) the (CaCO3] appears in the denominator of the equilibrium expression. For the following reaction: H2(g) + F2(g) = 2HF(g) the values of K and Kp are not the same. The value of K at constant temperature depends on the amounts of reactants and products that are mixed together initially. A large value of K means the...
Question 8 2 pts Which of the statements are TRUE? Select all that are true. The AG of a reaction is negative when Q-K Under standard state conditions, Q is always 1. Under standard state conditions, Q = K. At equilibrium, AG-AG. At equilibrium, AG=0. AG is a measure of how far the system is from standard conditions. The sign on AG indicates the direction a system will proceed to reach equilibrium from any initial conditions. None of the statements...
6. Which of the following statements is not true? A) Bond breaking is endothermic. B) The bond dissociation energy for bond breaking is always negative. C) Bond making is exothermic. D) The bond dissociation energy for bond formation is always negative. 37. Using the bond dissociation energies given, calculate AH® for the following reaction. CH,CH -Br + H2O CH,CH-OH + HBr AH KJ/mol Bond A-B CH3CH2-Br H-OH сHCH-он H-Br A) +108 KJ/mol B) -130 KJ/mol C) -22 KJ/mol D) +22...
I pts Select all statements that are true about electric potential (voltage). it's a vector it depends on the source and not a subject or test charge it can be positive, negative, or zero D only changes in the electric potential are physically meaningful O it is equal to the electric potential energy a conductor in electrostatic equilibrium has the same voltage throughout the interior and surface D it always increases as you move away from any charged object
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