Given the following ræactions and their enthalpies: ΔΗ (k/mol), +436 2H(g) H2(g) 0,(g) - 20(g) +495 H(g) + 02(g) Н.О(g) -242 (a) Devise a way to calculate AH for the reaction H,O(g) → 2H(g) + O(g) (b) From this, estimate the H-O bond energy.

Given the following ræactions and their enthalpies: ΔΗ (k/mol), +436 2H(g) H2(g) 0,(g) - 20(g) +495 H(g) + 02(g) Н.О(g) -242 (a) Devise a way to calculate AH for the reaction H,O(g) → 2H(g) + O(g) (b) From this, estimate the H-O bond energy.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: Using the Supplemental Data, calculate the standard enthalpy change (in kJ/mol) for each of the…

Q: The reaction 2 Ti (s) + 3 I2 (g) –→2 Til3 (s) having AH = -839 kJ/mol is: (a) endothermic and, thus,…

A: Given, Chemical Reaction 2 Ti (s) + 3 I2(g) ---> 2 TiI3(s) Change in enthalpy , ∆H = - 839…

Q: A chemist measures the enthalpy change AH during the following reaction: 8 SO,(g) + 16 H,S(g)→3…

Q: Given the following reaction: CO(g) + O(g) →→→→CO₂(g) AH,º=? Calculate the enthalpy of reaction…

A: We have to calculate the enthalpy of reaction given the following enthalpies of formation

Q: Given the following reactions and their enthalpies: ΔΗ (k/mol) H2(g) O2(g) 2H(g) 20(g) +436 +495 1…

A: Reaction 1: H2 (g) → 2 H (g) ∆H1 = +436 kJ/molReaction 2: O2 (g) → 2 O…

Q: The standard enthalpy change of combustion of graphite and diamond are −393.5 kJ mol−1 and −395.4 kJ…

A: (a)It is given Enthalpy of combustion C(graphite)+ O2 -------> CO2 .....(1) ∆H=…

Q: Given the reactions, X(s) +02(g) XO(s) ΔΗ -670.5 kJ XCO3(s) XO (s)+CO2(g) ΔΗ +395.3 kJ what is AH…

A: Given that,The enthalpy change of the reaction is

Q: A chemist measures the enthalpy change AH during the following reaction: 8 SO2(g) + 16 H,S(g)→3S8(s)…

Q: You wish to know the enthalpy change for the formation of liquid PCl3 from the elements. P4(s)+6…

Q: The combustion of propane gas leads to formation of carbon dioxide and water by the following…

A: Answer:- firstly from the balanced chemical equation and the enthalpy of reaction , moles of carbon…

Q: How much work, w, must be done on a system to decrease its volume from 20.0 L to 13.0 L by exerting…

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

Q: Calcium reacts with HCl according to the following reaction: Ca(s) + 2HCl(aq) -> CaCl2(aq) + H2(g)…

A: Given: Mass of calcium is 2.5 g. qsoln is +487 J. Introduction: The enthalpy of the reaction is the…

Q: Using Hess Law and based on the equations, find enthalpy changes, AHm, for this reaction; NaH4() +…

A: Here we will perform some algebraic operation to find the enthalpy value whose enthalpy is unknown…

Q: Given the following reaction: 4 Fe(s) + 3 O2 (g) → 2 Fe2O3 (s) ΔH = -1648 kJ 52.0 g of Fe (MM =…

A: 52.0 g of Fe is reacted.Thus, moles of Fe reacted

Q: When 0.238 g of sodium metal is added to an excess of hydrochloric acid, 2470 J of heat are…

A: 2Na(s) + 2 HCl (aq) -->2NaCl(aq) + H2(g) Enthaly of reaction=? Na has molar mass=23 0.238g of…

Q: 45.00 mL of unknown calcium hydroxide solution is titrated with 0.300 M standard nitric acid…

A: The balanced reaction taking place is Ca(OH)2 + 2HNO3 ------> Ca(NO3)2 + 2H2O Hence for 1 mole…

Q: When 0.0700 moles of metal "X" is allowed to completely react with 200 mL of aqueous HCI, the…

A: Given data,Moles of Metal=0.070molesVolume of HCl=200mL∆T=42.9-25=17.9oCHeat capacity of…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2C(s) + H₂(g) → C₂H₂ (9)…

Q: You wish to know the enthalpy change for the formation of liquid PC13 from the elements. P4 (s) + 6…

A: The objectiveof the question is to calculate the enthalpy change for the formation of .

Q: Unfortunately I don't get the answer for this one....I've calculated several times already

Q: (a) What is meant by the term standard conditions with referenceto enthalpy changes? (b) What is…

A: a) Standard conditions with respect to the enthalphy of changes would be the enthalphy that is…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2C(s) + H₂(g) → C₂H₂ (9)…

A: C2H2(g)→2C(s)+H2(g) ∆H1∘=-226.7kJ2C(s)+2H2(g)→C2H2(g) ∆H2∘= 52.3kJC2H2(g) +H2(g)→C2H4(g)…

Q: If the reaction of 245 mL of an HCI solution with excess CaO released 41.7 kJ of enthalpy, then what…

A: Given data is Volume of HCl solution = 245 mL Enthalpy of the reaction between HCl and excess of…

Q: Determine the total heat absorbed by the reaction, in kJ, if 2.50 g of O2 is required to fully…

A: Heat absorbed by the reaction = 89.4kJ.mol The heat of Formation of SO3(g) = -204.1kJ/mol

Q: Consider the reaction 2 S(g) + 3 O2(g) → 2 SO3(g). Using the standard enthalpies of formation listed…

A: standard enthalpy of formation of SO3(g) = -395.7 kJ/mol standard enthalpy of formation of O2(g) = 0…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) + O₂(g) → 2PbO(s)…

A: Recall the given reactions, 1 2 Pb s + O2 g → 2 PbO s…

Q: Using the equations Sro (s) + CO, (g) → SrCO, (s) AH° = -234 kJ/mol 2 Sr(s) + O, (g) → 2 Sro (s) AH°…

A: Given SrO(s) + CO2(g) → SrCO3(s) ∆H° = -234 KJ/mol…

Q: The combustion of methanol is shown by the following equation: 2 CH₂OH()+30₂(g) → 2 CO₂(g) + 4H₂O(g)…

A: Given ,Objective :To find enthalpy of reaction.To find molar enthalpy of combustion of methanolFind…

Q: 2.) A researcher determined the enthalpy changed associated with the reaction: 2H,S(g) + SO2 >…

Q: For the chemical reaction Ca (s) + ½ O, (g) → CaO (s) AH° = -635 kJ/mol. What is the enthalpy for…

A: The given reaction is, 2CaO(s) ---> 2Ca(s) + O2(g) The chemical reaction given is, 1) Ca(s) +…

Q: A chemist measures the enthalpy change AH during the following reaction: 8 SO,(g) + 16 H, S(9)→3…

A: Here by applying Hess Law ,we can determine the enthalpy of reactions of different form of a…

Q: 4A.7 (a) Calculate the heat that must be supplied to a copper kettle of mass 400.0 g containing…

A: When no transition of phase takes place, the heat supplied to a body leads to a rise in the…

Q: 3. (a) Using thermodynamics, explain the difference between a closed system and an open system. (b)…

A: By using thermodynamics following explanations has been given

Q: I need help

Q: A sample of a hydrocarbon is combusted completely inO2(g) to produce 21.83 g CO2(g), 4.47 g H2O(g),…

A: (a) Given: Mass of carbon dioxide=21.83 g Mass of water=4.47 g Heat=311 KJ Each molecule of CO2…

Q: 2 (a) In this investigation, you will use a polystyrene-cup calorimter to determine the amount of…

A: Calorimeter is used to find the heat of neutralization.

Q: Given the following reactions and their enthalpies: AH(kJ/mol) H;(g) 2H(g) 20(g) +436 O:(g) +495…

A: Introduction: For a chemical reaction, The amount of energy per mole released or produced at…

Q: Hydrazine, N3H4, is a colorless liquid used as a rocket fuel. What is the enthalpy change for the…

A: ΔH is an extensive property....

Q: Part B Hydrogen, a potential future fuel, can be produced from carbon (from coal) and steam by the…

Q: Identify the alkene that is the most stable and the alkene that is the least stable xx xx Most…

A: Greater the substitution higher the stability Trans alkene is more stable than cis

Q: The enthalpy of neutralization of a newly discovered compound, J(OH)3, was determined using a…

A: #(a): The balanced equation for the reaction between HCl(aq) and NaOH(aq) is: HCl(aq) + NaOH(aq)…

Q: (a) Draw a Lewis diagram for carbonic acid, H,CO3, with a central carbon atóm bonded to the three…

A: Note: Since you have posted a question with multiple subparts which are solved via different…

Q: AH= kJ.

Q: Using the provided enthalpy of formation, determine the enthalpy for the reaction: 3A (s)+ 2B (I)…

A: Use the given value of ∆H ∆H= ∆Hproduct-∆Hreactant ∆H= 1348kj/mol So rxn is endothermic

Q: Calculate the enthalpy change for the reaction C(graphite) + 2 H2(g) → CH4(g) with the help of the…

Question

Given the following ræactions and their enthalpies:
ΔΗ (k/mol),
+436
2H(g)
H2(g)
0,(g) - 20(g)
+495
H(g) + 02(g)
Н.О(g) -242
(a) Devise a way to calculate AH for the reaction
H,O(g) → 2H(g) + O(g)
(b) From this, estimate the H-O bond energy.

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

(b) What is the first law of thermodynamic? Define the Hess law. Given the following data; 2CIF(g) + 0,(g) CI,0(g) + F,O(g) AH = 167.4 kJ AH = 341.4 kJ SH = -43,4 kJ 2CIF,(g) + 20,(g) → CĻ0(g) + 3F,O(g) 2F,(2) + O(8) → 2F,O(g) calculate AH for the reaction CIF(g) + F(8) CIF,(g)
(b) An aqueous solution of acetic acid can be prepared by the reaction of ethanol with oxygen : CH3CH2OH (1) + O2 (g) –→ CH3COOH (1) + H2O (1) Write thermochemical equations for enthalpy of formation of the given compounds and calculate AH for the reaction, given the following data. Enthalpy of formation, AHf (kJmol") -277.8 Compound CH;CH2OH (1) CH3COOH (I) H2O (1) -485.0 -286.0
Hydrogen peroxide can be prepared in several ways. One method is the reaction between hydrogen and oxygen, another method is the reaction between water and oxygen. Calculate the Δ⁢Grxn∘ of each reaction using values from the table of thermodynamic properties. (1)H2(g)+O2(g)↽−−⇀H2O2(l) Δ?∘rxn= kJ⋅mo^l−1 (2)H2O(l)+12O2(g)↽−−⇀H2O2(l)
(D 263 kJ/mol P. 22. Using the following thermochemical equations: C(s) + O,(g) → CO,(g) ΔΗΟ. rxn 1 =-394 kJ/mol,Txn C(s) + CO,(g) → 2 CO(g) AH°. Ixn 2 =+173 kJ/mol,xa Determine the enthalpy of the reaction represented below: 2 C(s) + 0,(g) → 2 CO(g) ΔΗ Txn 3 = ? 1> (A) ΔΗ. :-567 kJ/molxn rxn (В) ДН =-221 kJ/mol,xn (С) ДН =+221 kJ/molpxn (D) AH°. +567 kJ/molpxn %3D Ixn qt ian od geind hw qua boalunai na cop d ofiosa orb d A 100--32 HO0-02 X convinn or rmrainn an nart of this nanA iR llanal.
Q.29. Determine, at 298 K, AH, the standard enthalpy of the reaction (1) between dinitrogen tetraoxide and hydrazine: (1) N204 (g) + 2 N2H4 (1) → 3 N2 (g) + 4 H20 (g) Knowing the standard reaction enthalpies, at 298 K, of the following reactions: (2) NH3 (g) 1/2 N2 (g) + 3/2 H2 (g); A2H° - + 46,19 kJ. mol (3) N204 (g) 2 NO2 (g); AgH-+ 58,04 kJ. mol- (4) 2 NH3 (g) > N2H (I) + H2 (g) ; AraH° = + 142,80 kJ. mol- (5) 2 NO, (g) + 4 H2 (g) → N2 (g) + 4 Hz0 (g) ; AsH = - 1 033,66 kJ. mol-
4NH3(g) + 3O2(g) → 2N2(g) + 6H2O(l), ΔH = -1530kJmol-1 (1) H2(g) + 1/2O2(g) → H2O(l), ΔH = -288 kJmol-1 (2) Construct an enthalpy cycle and calculate the enthalpy of formation of ammonia.
The following table contains some standard enthalpies of formation, AH, at 298 K. Substance diamond graphite carbon tetrachloride carbon tetrachloride carbon tetrafluoride methane carbon monoxide carbon dioxide chlorine gas Cl₂ (g) hydrochloric acid fluorine gas hydrofluoric acid hydrogen oxygen water water hydrogen peroxide hydrogen peroxide ΔΗ (kJ/mol) 1.88 Formula C(s) C(s) 0 CCl4 (g) -106.7 CC14 (1) -139.3 CF4 (g) CH4 (g) -74.8 CO(g) -110.5 -679.9 CO₂(g) -393.5 0 HCl(g) -92.30 F2 (g) 0 HF (g) -268.61 H₂(g) 0 O2 (g) 0 H₂O(g) -241.82 H₂O(1) -285.83 H₂O2(g) -136.10 H₂O2 (1) -187.8
Q: 3 Define and elaborate the significance of Faraday’s law (first and second)?
A.) Given the standard enthalpy changes for the following two reactions: (1) 2Ni(s) + O2(g)-2NIO(s) AH° = -479.4 kJ (2) Ni(s) - Cl2(g)–→NIC2(s) AH° = -305.3 kJ what is the standard enthalpy change for the reaction: (3) 2NICI,(s) + O2(g)2NIO(s) + 2C2(g) AH° = ? kJ B.) Given the standard enthalpy changes for the following two reactions: (1) 4C(s) - SH2(g) C,H10(e) AH° = -125.ó kJ (2) C,H(g)2C(s) + 2H2(g) AH° = -52.3 kJ what is the standard enthalpy change for the reaction: (3) 2C,H4(g) + H2(g) ) C,H10(g) AH° = ? kJ
What is the enthalpy change, Delta Hrxn, for the following reaction? 2 NaOH (s) + CO2 (g) → Na2CO3 (s) + H2O (l)
15. Using the standard enthalpies of formation for the chemicals involved, calculate the enthalpy change for the following reaction. (Note: Show the math clearly and provide units in your setup) (AH; Values in kJ/mol are as follows: NO, +32, H,0 -286, HNO3 -207, NO +90) 3NO2(8) + H,Oy O 2HNO3(aq) + NO(g) (g),
（1）Consider the reaction: 2A (g) + 3 B (g) → 2 C (g) ΔHrxn = +254.3 kJ What will be the enthalpy change (in kJ) if 0.471 mol B reacts in excess A? （2）Consider the reaction: C (s) + O2 (g) → CO2 (g) ΔHrxn = -393.5 kJ What mass of carbon (in g) must be reacted via this mechanism to release 581.2 kJ of heat?