The value of Ka for nitrous acid (HNO2) at 25∘C is 4.5×10-4 What is the value of ΔG when [H+]= 5.7×10−2 M , [NO2-]= 6.6×10−4 M , and [HNO2]= 0.20 M? Express your answer using one significant figure.

Q: Module 8, Is the change in entropy for the following chemical reactions positive or negative? (Note:…

A: Equilibrium constant is defined as ratio of concentration of product to concentration of reactant.

Q: Determine whether the following reactions are spontaneous Ca(aq)+Zn(s)--> Ca(s)+Zn(aq)2+

A: The spontanity of the reaction can be determined by calculating the value of Standard Gibbs free…

Q: Which of the following processes would be accompanied by a decrease in entropy? O H₂O(s) → H₂O(1) O…

A: Entropy is randomness of system.  For gaseous state entropy is most.  For solids entropy is least.

Q: Which would describe an exothermic reaction which undergoes an increase in entropy? O AHxn 0 and ASn…

A: We are given two questions , one is based on thermodynamics of reaction and the another one is on…

Q: A chemist fills a reaction vessel with 0.467 g mercurous chloride Hg2Cl2 solid, 0.168 M mercury (I)…

A: The expression for change in free energy is shown below: Where; ΔG = change in free energy ΔG0 =…

Q: Consider the decomposition of a metal oxide to its elements, where M represents a generic metal.…

A: The value of ∆G°f is -10.00 kJ/mol. The temperature of reaction is 298 K.

Q: Which reactions are spontaneous in the forward direction and spontaneous In the reverse direction…

A: ->If ∆rG < 0 => then it is spontaneous. ->If ∆rG > 0 => then it is non…

Q: Why are spontaneous and non-spontaneous reactions often coupled?

A: Spontaneous reaction: the reaction which take place on its own without any initiation are…

Q: Which of the following processes does NOT involve an increase in entropy? Melting of gold nuggets…

A: Entropy is a measure of the randomness of the system. The entropy change in a chemical reaction can…

Q: DeltaH=21      T=21.2 degrees C   DeltaS= 0.071 Is the dissolution process studied today, NaNO3…

A: Hello. Since more than one question has been asked, the first question shall only be answered in…

Q: What is the enthalpy change when silver chloride form from the ions in an aqueous solution? What is…

A: The question is based on the concept of chemical thermodynamics. we have to calculate enthalpy,…

Q: 2 C4H10 (g)  +  13 O2 (g)   →    8 CO2 (g)  +  10 H2O (g)  a) what sign do you expect for the change…

A: Entropy is the measure of randomness or disorder in a system. More ordered, less will be the…

Q: 6. In which of the following reactions do you expect to have the most significant decrease in…

A: Answer: Entropy is the measure of system's disorderliness or randomness. In more possible states…

Q: Which of the following cases has a decrease in entropy? Vaporization of water. Formation of H20 (g)…

A: The disorderness of the system is called as entropy. It is expressed by S . The standard entropy at…

Q: 4 Which of the following reactions would result in a decrease in entropy? 2 H2O2 (g) → O2(g) + 2…

A: Entropy can be measured by seeing the degree of disorderness.  Entropy will increase when the number…

Q: Which of the following represents an increase in entropy

A: Entropy is defined as degree of disorderness or randomness or unevenness present Entropy is highest…

Q: HCI(9) and HCI(aq) Match the words in the left column to the appropriate blanks in the sentences on…

A: Entropy is a thermodynamic property that accounts for the randomness or disorderness in the system.…

Q: What is the value of the equilibrium constant at 20°C for a reaction that has a standard free-…

A: The relationship between the ΔG0 and equilibrium constant is given by  RTln(K) = nFE0cell = -ΔG0…

Q: 10 For a certain chemical reaction, the equilibrium constant K = 3.4 × 10º at 30.0 °C. Calculate the…

A: The relationship between standard Gibbs free energy change (∆G°) of reaction and equilibrium…

Q: a) calculate deltaS surr for the following reaction: CO(g)+ 2H2(g)= CH3OH(liq) occurring at 1 atm…

A: The second law of thermodynamics states that entropy change of the universe is the sum of change in…

Q: 1. Consider the reaction at 25 degrees Celsius 2NO3 (aq) + 8H*(aq) + 3Cu(s) → 3CU²*(aq) + 2NO(g) +…

A: We’ll answer the first three subparts since the exact one wasn’t specified. Please submit a new…

Q: find the temperature in K above which a reaction with a delta H of 195.7 kJ/mol and 58.7 deltaS J/K…

A: For a reaction to be spontaneous, the value of should be negative i.e. . The given problem can be…

Q: For which of these is there an increase in entropy?   KCl(aq)+AgNO3(aq)→KNO3(aq)+AgCl(s)…

A: Entropy Entropy is defined as the degree of randomness, which is highest for gas, followed by liquid…

Q: Using the thermodynamic data provided below, calculate the standard change in entropy when one mole…

A: Given: The standard entropy of NaNO3 is 116 J/K mol. The standard entropy of Na+ion is 60.25 J/K…

Q: Substance Consider the decomposition of a metal oxide to its elements, where M represents a generic…

A:

Q: P4 (g)  +   10 Cl2 (g)   →    4 PCl5 (g)   a) Without consulting the tables, what sign do you…

A: Entropy means randomness of system. If there are more number of molecule then they move random…

Q: Which of the following processes shows a decrease Select one: O a. 2 CO(g) + 02(g) → 2 CO2(g) O b.…

A: 2CO(g)+O2(g) ------->  2CO2(g) This process will show a decrease in entropy. Moles of reactant…

Q: Rank the following compounds in order of INCREASING standard molar entropy. a. H2O2(l), H2O(l),…

A:

Q: Describe each  reaction  as spontaneous or non-spontaneous. Pb  +  Fe^3+ -----> Fe^2+  +  Pb^2+

A:

Q: [2] [a] The forward reaction is spontaneous for a particular reversible reaction. What can you…

A: To determine these , we would use thermodynamics chemistry laws and formulae .

Q: In which case does Kc=Kp? 2A(g) + B(s) ⇌ 2C(s) +D(g) 2A(g) + B(s) ⇌ C(s) +2D(g) 3A(g) + B(s) ⇌…

A: The relationship between Kc and Kp is as follows, Here Kp = Kc when delta n value becomes 0.

Q: Is the acid-base neutralization of HCl and NaOH spontaneous or non-spontaneous at 37°C? Given delta…

A:

Q: A 100-mL sample of water is placed in a coffee cup calorimeter. When 1.0 g of an ionic solid is…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Select the reaction that represents an increase in entropy for the system: a.…

A: Entropy is randomness of particles. Entropy order  of :  Gas > liquid > solid

Q: Ni(s) +4 CO(g)- Ni(CO)(e) Cu(s) +1/2 Ozle)- CuO(s) H2O(g)- H20(1) CO(g) + H2O(e)> CO:(g) + Hz(g)

A: Given set of equation:  1) Ni(s) + 4 CO (g) ==> Ni(CO)4 (g)  2) Cu(s) + 0.5 O2 (g) ==> CuO (s)…

Q: 4) For the reaction CaC,(s)+2H,0(1) → C,H¿(g)+ Ca(OH),(s) calculate AG° at 25°C. AGP(kJ) СаС:(8)…

A: STANDARD GIBBS FREE ENERGY OF FORMATION(KJ/mol) CaC2(s) -64.9 H2O(l) -120.35 C2H2(g) 209.2…

Q: NH3(g)   +  HCl(g)   ---->   NH4Cl(s) ΔHfo(kJ/mol):  -46.2          -92.3                   -314.4…

A: The reaction given is  NH3(g)   +  HCl(g)   ------->   NH4Cl(s)

Q: Rank the following substances from the least to greatest in terms of standard entropy (1 as the…

A: Gaseous state has highest randomness so highest entropy followed by liquid state and lest is solid…

Q: Discuss the spontaneity of each process in the following scenarios, based on the use of the Gibbs…

A:

Q: For the following reactions, indicate whether the entropy of the system increases, decreases, or…

A:

Q: 2 C4H10 (g)  +  13 O2 (g)   →    8 CO2 (g)  +  10 H2O (g)  a) Without consulting the tables, what…

A:

Q: Which of the following processes are spontaneous?  Spreading a fragrance of perfume through a room.…

A: Spontaneous reaction: The process which does not need any external energy for the initiation of the…

Q: Which one of the following processes produces a decrease in the entropy of the system? precipitation…

A: Entropy is defined as the measure of randomness in the particles of a given substance or system. If…

Q: Acetic acid, HC2H3O2 (Ka = 1.8 x 10 5), dissociates in water as follows: HC2H3O2 = H* + C2H3O2. Use…

A: We will calculate ∆G° . fir this reaction using relation between ∆G°  and K.

Q: 8.35 Without performing any calculations, predict whether there is an increase or a decrease in…

A: Entropy is a measure of the molecular disorder or randomness of a system. We can easily predict a…

Q: Is the entropy (degree of disorder) increasing or decreasing in these reactions? a. H2 (g) + Br2 (1)…

A: Entropy can be defined as degree of randomness. Gaseous molecules have greater entropy than liquid…

Q: What must the reaction quotient Q be, if the free energy is -961.941 kJ at 25.0°C? 5C2H2(g) + 5…

A: We can solve this problem by using following equation ∆G = ∆G°-2.303RTlog Q Where  ∆G = free energy…