The 1980s saw reports of ΔfH⦵(SiH2) ranging from 243 to 289 kJ mol−1. If the standard enthalpy of formation is uncertain by this amount, by what factor is the equilibrium constant for the formation of SiH2 from its elements uncertain at (a) 298 K, (b) 700 K?

The 1980s saw reports of ΔfH⦵(SiH2) ranging from 243 to 289 kJ mol−1. If the standard enthalpy of formation is uncertain by this amount, by what factor is the equilibrium constant for the formation of SiH2 from its elements uncertain at (a) 298 K, (b) 700 K?

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter17: Electrochemistry

Section: Chapter Questions

Problem 38P

See similar textbooks

Related questions

Q: The equilibrium constant for the formation of CO2(g) at a temperature T is given by the 13275.6…

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

Q: Determine the standard state entropy, standard state enthalpy, and standard state Gibbs potential of…

Q: calculate the Gibbs free energy of formation of BiF5 at 298 K. Is the formation of BiF5 from the…

A: Given to us that: The formation of a BiF5 molecule by its standard elements . And Temperature T=298K…

Q: Carbon may exist as diamond, graphite, and other allotropes. The standard Gibbs energy of formation…

A: Given: Carbon has different forms of allotropes such as diamond and graphite. The standard Gibbs…

Q: equilibrium constant

Q: For a reaction where ∆H° = +573 kJ/mol and ∆S° = +1.64 kJ/mol･K, at what temperature, in K, does…

A: For a reaction to be spontaneous the value of ∆G° must be negative.

Q: The change in enthalpy and entropy of the reaction below are -166 KJ and -284.8 J/K respectively. If…

A: Gibbs free energy of a reaction can be used to determine the spontaneity of a reaction. Write the…

Q: .What would be the equilibrium temperature if you drop 5.0 g of brass (Cp = 0.38 J/g-oC, initially…

A: Given data,Mass of brass=5.0gCp(brass)=0.38J/goCInitial temperatrature (Tibrass)=68oCMass of…

Q: Ammonia reacts with water in liquid ammonia solution according to the equation: NH3(g) + H2O ⇌ NH4+…

A: Spontaneity of a chemical reaction can be expressed in terms of Gibbs free energy change. Write the…

Q: For the reaction given in Part A, how much heat is absorbed when 2.70 mol of AA reacts? (the image…

Q: Given the following two measurements of the equilibrium constant for a reaction, calculate ΔH° for…

A: Given that, For he reaction, temperature T1 = 30°C = 303 K Rate constant k1 at temperature T1 =…

Q: What is the standard change in Gibbs free energy of this reaction at 25 °C?

Q: Explain The Concept of Chemical Potential?

A: The amount of energy the reacting species can exchange either by absorption or release due to the…

Q: Differentiate between Emf, Free Energy, and the Equilibrium Constant?

A: An electrochemical cell is a device which generated electricity by the virtue of flow of electrons…

Q: 18. Use the values of the standard Gibbs energies and enthalpies of formation from prescribed…

A: To gain a general understanding of Gibbs energy and its applications in chemistry. Enthalpy and…

Q: P6A.2 Calculate the equilibrium constant of the reaction CO(g) + H,(g)=H,CO(g) given that, for the…

Q: A. Calculate the standard enthalpy change of the reaction in kJ. Is the process endothermic or…

A: ∆H rxn = ∆H product - ∆H reactant ∆S rxn = ∆S product - ∆S reactat ∆G rxn = ∆H rxn - T∆S rxn

Q: X,(g) X(g) Assume that the standard molar Gibbs energy of formation of X(g) is 4.43 kJ - molat 2000.…

A: Given; ∆G (at 2000k) = 4.43 kj/mol = 4430 j/mol Unknown; K (at 2000) ??

Q: Is the formation of ozone [O3 (g)] from oxygen [O₂ (g)] spontaneous at room temperature under…

A: A reaction is spontaneous when ∆G° for the reaction is negative and if ∆G° is positive for reaction…

Q: Calculate the equilibrium constant for this reaction. At what temperatures will this reaction be…

A: First to calculate ΔS and ΔH Then to calculate ΔG Then to calculate kc. Then to find the…

Q: What is the standard enthalpy of a reaction for w hichthe equilibrium constant is (a) doubled. (b)…

A: The given data contains, Temperature = 308 K.

Q: Calculate the enthalpy of solution for the dissolution of lithium iodide, LiI, molar mass = 133.85 g…

Q: Use data from Appendix C to estimate the normal boiling point of CCl4.

A: Since the Appendix C has not been provided, the question will be solved, considering the standard…

Q: What is the relationship between the standard free energy change and the equilibrium constant of the…

A: To explain: The relationship between the standard free energy change and the equilibrium constant of…

Q: When temperature increases from 15.0 °C to + 15.0 °C, the thermodynamic equilibrium constant for the…

A: The solution is as follows :

Q: Given the following information, calculate the equilibrium constant (K) of the reaction at 298 K. (R…

Q: What would be the equilibrium temperature if you drop 5.0 g of brass (Cp = 0.38 J/goC, initially at…

A: Given that : Mass of brass = 5.0g Cp of brass= 0.38 J/g°C Initial temperature of brass = 68°C Mass…

Q: Calculate the standard change in Gibbs free energy, AG, for the given reaction at 25.0 °C. Consult…

A: Solution

Q: What is the standard enthalpy (in kJ/mol) of a reaction for which the equilibrium constant increased…

A: The relationship between equilibrium constant ( K ) , temperature ( T ) and standard enthalpy ( ∆H…

Q: Given that AG, for NH3 = -16.666 KJ/mol, calculate the equilibrium constant for the following…

A: We have to calculate the equilibrium constant for the reaction.

Q: Question attached

A: Given data: Temperature (T)=37°C The change in the enthalpy (∆H)= -125 k J mol-1 The change in the…

Q: Balance the reaction and calculate the standard entropy change. K(o) + Cl2i@) → KCIco)

A: We have to balance the given reaction

Q: the standard Gibbs Free Energy

Q: What is the equilibrium constant, K, for a reaction if ∆G° = 223.5 kJ/mol at 25.0 °C? (R = 8.314…

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

Q: e standard Gibbs Free Energy, AG n rxn, for th

A: The standard Gibbs free energy of formation of a compound is the change of Gibbs free energy that…

Q: (c) Account for the signs of AS° and AH° for the ionization reaction in terms of the molecules and…

A: Answer for part C: ∆Hforeaction = ∆Hfoproduct - ∆Hforeactant = [∆HfoH+ + ∆HfoHSO3-] - [∆HfoH2SO3 ] =…

Q: How much energy (at constant temperature and pressure) must be supplied as heat to 10.0 g of…

A: The given data contains, mass of chlorine gas =10.0 g Enthalpy of ionization =+12575 kj/molElectron…

Q: SUK mol1) 213.8 131.1 159.9 188.8 calculate the enthalpy change, ArH, and entropy change, ArS, for…

A: From the given data, □Hrxn= [total □Hf)products -[Total □Hf)reactant = (-277.4 -3×241.8)-(2× -393.5)…

Q: If Gibbs free energy (at standard conditions) of a reaction is -22.8 kj/mol, what is the equilibrium…

A: Given information:Gibb’s free energy for a reaction = 22.8 kJ/molStandard temperature = 25◦ C…

Q: Suppose that nA = 0.10nB and a small change in composition results in μA changing by δμA = +12 J…

A: Given data, nA = 0.10nB δμA = +12 J mol−1 μB change has to be calculated.

Q: equilibrium constant K̟ for th

Q: Nitric oxide, NO, also known as nitrogen monoxide, is one of the primary contributors to air…

A: The considered reaction is, N2 (g) + O2 (g)→2NO (g)

Q: Calculate the standard Gibbs free energy change, ∆Gorxn, for the following reaction at 25.0oC:…

A: Given: The temperature is 25 °C. The Ksp of the salt is 2.07×10-33. Introduction: Write the…

Q: The formation constants at 25°C for Fe(CN)64– and Fe(EDTA)2– are 1.00x1037 and 2.10x1014,…

A: We have Fe^2+(aq) + 6CN^- (aq) => Fe(CN)64-(aq) Kf = 1.00*10^37 Fe^2+(aq) + EDTA^4-(aq) =>…

Q: The phase diagram for SO2 is shown here. (a) What doesthis diagram tell you about the enthalpy…

A: a.

Q: Calculate The Equilibrium Constant K of hydrosulfuric acid (H2S(aq)) Standard Gibbs Free energy…

A: The relationship between the standard free energy (∆G°) and the equilibrium constant (Keq) of a…

Q: Determine the temperature of a reaction if K = 1.2 x 106 when AG° = +24.7 kJ/mol.

A: in thermodynamical system, Gibbs free energy is equal to maximum work done when temperature and…

Question

The 1980s saw reports of Δ_fH^⦵(SiH₂) ranging from 243 to 289 kJ mol⁻¹. If the standard enthalpy of formation is uncertain by this amount, by what factor is the equilibrium constant for the formation of SiH₂ from its elements uncertain at (a) 298 K, (b) 700 K?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Structure and Dynamics of Macromolecules

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Actually, the carbon in CO2(g) is thermodynamically unstable with respect to the carbon in calcium carbonate(limestone). Verify this by determining the standardGibbs free energy change for the reaction of lime,CaO(s), with CO2(g) to make CaCO3(s).
Data are given in Appendix 1 for white phosphorus, P4(s). P4(g) has the following thermodynamic values: Hf=58.9kJ/mol , S=280.0J/kmol . What is the temperature at which white phosphorus sublimes at 1 atm pressure?
Determine the equilibrium constant for the reaction Sn+Pb2+Sn2++Pb
Use the appropriate tables to calculate H for (a) the reaction between copper(II) oxide and carbon monoxide to give copper metal and carbon dioxide. (b) the decomposition of one mole of methyl alcohol (CH3OH) to methane and oxygen gases.
The equilibrium constant for the reaction Na2(g) → 2Na(g) is 2.47 at 1000. K. Calculate the value of G for this reaction under these conditions.
X,(g) X(g) Assume that the standard molar Gibbs energy of formation of X(g) is 4.43 kJ - mol' at 2000. K and -53.56 kJ · mol- at 3000. K. Determine the value of the thermodynamic equilibrium constant, K, at each temperature. At 2000. K, AG = 4.43 kJ · mol. What is K at that temperature? K at 2000. K = Question Source: McQuarrie, Rock, And Gallogly 4e- General Chemsitry Publisher: University Science 10:21 PN 2/16/2022 hp f6 ho insert prt sc & back 8.
(a) The equilibrium constant of the isomerization of cis-2-butene to trans-2-butene is 2.07 at 127.0 °C. Determine the standard molar Gibbs free energy, AGR º for the reaction. (b) For C6o, the standard molar Gibbs free energy (AG, º) of formation from the elemental carbon is 23.98 kJ/mol at 25.0 °C. Determine the equilibrium constant, Keq for the formation of C60.
The equilibrium constant for the reaction, 3 H2(g) + N2(g)= 2NH3(g), at a given temperature is 1.4 x 10–7. Calculate the equilibrium concentration of ammonia, if [H2] = 1.2 x 10–2 mol L–1 and [N2] = 3.2 x 10–3 mol L–1.
Select the reaction for which K, = Kc. 2 Na,0,(s) + 2 CO,(g) =2 Na,CO3(s) + 0,(g) 2 KCIO3 (s) = 2 KCI(s) + 30,(g) 2 H,S(g) + SO,(g)= 3 S(s) + 2 H,O(g) Br, (g) + Cl,(g) 2 BRCI(g)
What is the standard enthalpy of a reaction for which the equilibrium constant is (a) doubled. (b) halved when the temperature is increased by 10 K at 298 K?
Write the reaction quotient, Q., for each of the following reactions: (a) The first step in nitric acid production, NH3(g) + Oz(g) NO(g) + H20(g) –
The phase diagram for SO2 is shown here. (a) What doesthis diagram tell you about the enthalpy change in thereaction SO2(l) ---->SO2(g)? (b) Calculate the equilibriumconstant for this reaction at 100 °C and at 0 °C.(c) Why is it not possible to calculate an equilibrium constantbetween the gas and liquid phases in the supercriticalregion? (d) At which of the three points marked in reddoes SO2(g) most closely approach ideal-gas behavior?(e) At which of the three red points does SO2(g) behaveleast ideally?