Calculate the standard enthalpy change for the reaction 2A+B⇌2C+2D Use the following data: Substance ΔH∘f (kJ/mol)...

Calculate the standard enthalpy change for the reaction

2A+B⇌2C+2D

Use the following data:

Substance	ΔH∘f (kJ/mol)
A	-243
B	-397
C	191
D	-525

Solutions

Expert Solution

standard enthalpy change = enthalpy of ( products - reactants)

= 2C + 2D - ( 2A+B)

= (2 x 191) + (2 x -525) - [ (2 x -243) + (-397) ]

= + 215 kJ/mol

queen_honey_blossom answered 1 week ago

Next > < Previous

Related Solutions

Calculate the standard enthalpy change for the reaction 2A+B⇌2C+2D Use the following data: Substance ΔH∘f (kJ/mol)...

Calculate the standard enthalpy change for the reaction 2A+B⇌2C+2D Use the following data: Substance ΔH∘f (kJ/mol) A -261 B -381 C 197 D -521 Express your answer in kilojoules. DETAILED STEPS PLEASE! THANKS <3

Part A Calculate the standard enthalpy change for the reaction 2A+B⇌2C+2D where the heats of formation...

Part A Calculate the standard enthalpy change for the reaction 2A+B⇌2C+2D where the heats of formation are given in the following table: Substance ΔH∘f (kJ/mol) A -241 B -391 C 197 D -497 Express your answer in kilojoules. Hints ΔH∘rxn = 273 kJ SubmitMy AnswersGive Up Correct Part B For the reaction given in Part A, how much heat is absorbed when 2.80 mol of A reacts? Express your answer numerically in kilojoules. Hints kJ SubmitMy AnswersGive Up Part C...

Use data in Appendix C in the textbook to calculate ΔH∘ in (kJ/mol) , ΔS∘ in...

Use data in Appendix C in the textbook to calculate ΔH∘ in (kJ/mol) , ΔS∘ in (j/mol-K) , and ΔG∘ in (kJ/mol) at 25 ∘C for each of the following reactions: 2P(g)+10HF(g)→2PF5(g)+5H2(g) Appendix C: P(g): dH:316.4; dG: 280.0; S:163.2 HF(g): dH: -268.61; dG: -270.70; S:173.51 PF5(g): dH:-1594.4; dG: -1520.7; S: 300.8 H2(g): dH:217.94; dG: 203.26; S: 114.60

For the reaction A(aq) ---> B(aq) the change in the standard free enthalpy is 2.59 kJ...

For the reaction A(aq) ---> B(aq) the change in the standard free enthalpy is 2.59 kJ at 25 oC and 4.73 kJ at 45 oC. Calculate the value of this reaction's equilibrium constant at 75 oC.

A scientist measures the standard enthalpy change for the following reaction to be -613.2 kJ :...

A scientist measures the standard enthalpy change for the following reaction to be -613.2 kJ : P4O10(s) + 6 H2O(l)-->4H3PO4(aq) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of H3PO4(aq) is kJ/mol.

Given the following thermodynamic data, calculate the lattice energy of CsF: ΔH°f[CsF(s)] = -554 kJ/mol ΔH°sublimation...

Given the following thermodynamic data, calculate the lattice energy of CsF: ΔH°f[CsF(s)] = -554 kJ/mol ΔH°sublimation [Cs] = 76.5 kJ/mol Bond energy [F-F] = 159 kJ/mol IE1 (Cs) = 376 kJ/mol EA1 (F) = -328 kJ/mol -1414 kJ/mol -1493 kJ/mol -714 kJ/mol -758 kJ/mol -837 kJ/mol

a) The standard enthalpy change for the following reaction is -270 kJ at 298 K. 2HCN...

a) The standard enthalpy change for the following reaction is -270 kJ at 298 K. 2HCN (g) --> 2 C(s, graphite) + H2 (g) + N2 (g) ΔH° = -270 kJ What is the standard enthalpy change for this reaction at 298 K? C (s, graphite) + 1/2 H2(g) + 1/2 N2(g) ---> HCN(g) _______ kJ

Consider a gas phase reaction, 2A+B −↽−⇀− 3C+2D. When 1.00 mol A and 2.00 mol B,...

Consider a gas phase reaction, 2A+B −↽−⇀− 3C+2D. When 1.00 mol A and 2.00 mol B, and 1.00 mol D were mixed and allowed to come to equilibrium at 25◦ C and ptotal = 1.0 bar, the resulting mixture contained 0.90 mol C. Calculate (a)partial pressures of each at equilibrium, (b) Keq, and (c) ∆rG.

A reaction A + B <==> C has a standard free-energy change of -3.27 kJ/mol at...

A reaction A + B <==> C has a standard free-energy change of -3.27 kJ/mol at 25oC What are the concentrations of A, B, and C at equilibrium if at the beginning of the reaction their concentrations are 0.30M, 0.40M and 0M respectively?

A.) The standard enthalpy change for the following reaction is 359 kJ at 298 K. PbCl2(s)...

A.) The standard enthalpy change for the following reaction is 359 kJ at 298 K. PbCl2(s) ----> Pb(s) + Cl2(g) ΔH° = 359 kJ What is the standard enthalpy change for this reaction at 298 K? Pb(s) + Cl2(g) ----> PbCl2(s) __________ kJ B.) The standard enthalpy change for the following reaction is -602 kJ at 298 K. Mg(s) + 1/2 O2(g) ----> MgO(s) ΔH° = -602 kJ What is the standard enthalpy change for the reaction at 298 K? 2...

Subjects