At standard conditions of 25oC and 1 bar, are the enthalpies of formation of H2 and...

Question

Question

At standard conditions of 25oC and 1 bar, are the enthalpies of formation of H2 and H (monoatomic hydrogen) different or identical?

Answer 1

Answer #1

At standard conditions of 25 °C and 1 bar, are the enthalpies of formation of H2 and H both are different.

enthalpy of formation of H2 is zero.

enthalpy of formation of H is 218 kJ/mol.

Answer 2

Similar Homework Help Questions

At standard conditions of 25 C and 1 bar, are the enthalpies of formation of H2...

At standard conditions of 25 C and 1 bar, are the enthalpies of formation of H2 and H (monoatomic hydrogen) different or identical?
Concept questions, (a) State three thermodynamic properties of a good refrigerant. (1 mark) (b) At standard...

Concept questions, (a) State three thermodynamic properties of a good refrigerant. (1 mark) (b) At standard conditions of 25°C and 1 bar, are the enthalpies of formation of H2 and H (monoatomic hydrogen) different or identical? (1mark) (c) State three reasons that make the air-standard refrigeration cycle more suitable than vapor compression cycles for aircraft cooling applications. (1 mark) (d) A stream of atmospheric air of specific humidity a passes through a water spray and comes out with ob. Under...
a. c. Question 1: State three thermodynamic properties of a good refrigerant. b. State three reasons...

a. c. Question 1: State three thermodynamic properties of a good refrigerant. b. State three reasons that make the air-standard refrigeration cycle more suitable than vapor compression cycles for aircraft cooling applications. In a gas mixture, which component will have the higher partial pressure-the one with the higher mole number or the one with the larger molecular weight d. At standard conditions of 250C and 1 bar, are the enthalpies of formation of H2 and H (monoatomic hydrogen) different or...

1).From the standard enthalpies of formation, calculate ΔH°rxn for the reaction C6H12(l) + 9O2(g) → 6CO2(g)...

1).From the standard enthalpies of formation, calculate ΔH°rxn for the reaction C6H12(l) + 9O2(g) → 6CO2(g) + 6H2O(l) For C6H12(l), ΔH°f = –151.9 kJ/mol (5 points) Substance ∆H°f , kJ/mol C6H12(l) –151.9 O2(g) 0 H2O(l) –285.8 CO2(g) –393.5 2).Determine the amount of heat (in kJ) given off when 1.26 × 104 g of ammonia are produced according to the equation N2(g) + 3H2(g) → 2NH3(g) ΔH°= –92.6 kJ/mol Assume that the reaction takes place under standard conditions at 25oC.
Consider a sample of H2 and N2 at 1.00 bar and 25oC with mole fraction (X)...

Consider a sample of H2 and N2 at 1.00 bar and 25oC with mole fraction (X) of N2=0.25 Calculate the number of molecules m-3 for H2 and N2
Question 18 of 20 > Using the standard enthalpies of formation, what is the standard enthalpy...

Question 18 of 20 > Using the standard enthalpies of formation, what is the standard enthalpy of reaction? CO(g) + H2O(g) — CO2(g) + H, (g) AH UTop

using the standard enthalpies of formation, what is the standard enthalpy of reaction? CO(g) +H2O(g) =CO2...

using the standard enthalpies of formation, what is the standard enthalpy of reaction? CO(g) +H2O(g) =CO2 (g) + H2 (g)
10. Using the table of standard formation enthalpies that you will find below, calculate the reaction...

10. Using the table of standard formation enthalpies that you will find below, calculate the reaction enthalpy of this reaction under standard conditions: 8H2S(g)+ 402(g) Ss(s) + 8H2O(0) Round your answer to the nearest kJ. reactant or product H2S(g Ss(s) Standard formation rection -206 H(+ 8SH2Sg) 0 0 H2O)
Using the standard enthalpies of formation, what is the standard enthalpy of reaction? CO g) +...

Using the standard enthalpies of formation, what is the standard enthalpy of reaction? CO g) + H,O(g) Co,(g) + H (g) AHn kJ

1. (2 points) Using the table of standard enthalpies of formation, answer the questions below: a....

1. (2 points) Using the table of standard enthalpies of formation, answer the questions below: a. What mass of carbon monoxide must be burned to produce 175 kJ of heat under standard state conditions? b. When 2.50 g of methane burns in oxygen, 125 kJ of heat is produced. What is the enthalpy of combustion per mole of methane under these conditions?