Find the ΔH (in kJ) for the reaction: PCl3(l)  +  Cl2(g)  →  PCl5(s)   Given: 2 P (s)  +  3 Cl2(g)  →  2 PCl3(l)                 ΔH = -640 kJ 2 P (s)  +  5 Cl2(g)  →  2 PCl5(s)                ΔH = -886 kJ

Q: Consider the reactions N2H4(l) + CH4O(l) → CH2O(g) + N2(g) + 3H2(g) ΔH = 80 kJ/mol N2(g) + 3 H2(g) →…

A: As per the given data We need to fing the overall ∆H for the above reactions which can be shown as…

Q: The standard enthalpy change for the following reaction is 986 kJ at 298 K. Ca(OH)2(9) → Ca(s) +…

A: The given reaction is  Ca(OH)2 -------> Ca(s) + O2(g) + H2(g)  Delta H = 986 kl/mol

Q: Calculate the enthalpy of reaction (ΔHrxn), in kJ, for the following reaction: Fe2O3(s) + 3 CO(g) →…

A: According to Hess's law change of enthalpy in a chemical reaction is same regardless of whether the…

Q: Calculate Δ Hrxn for  Ca(s) + 1/2 O2(g) + CO2(g) → CaCO3(s)   given the following set of reactions:…

A: Given :  Ca(s) + 1/2 O2(g) →CaO(s)  ΔH = −635.1 kJ CaCO3(s) →CaO(s) + CO2(g)  ΔH = 178.3 kJ    To…

Q: From the following enthalpies of reaction: H2(g)+F2(g)→2HF(g),ΔH=−537kJ…

A: H2(g)+f2(g)-> 2hf(g) triangle h=-537 kj C(S)+2f2 (g) àcf4 (g)  triangle h=-680 kj eqn2…

Q: Calculate ΔHrxn for the following reaction: CaO(s)+CO2(g)→CaCO3(s) Use the following reactions and…

A: Required reaction:  CaO(s) + CO2 (g) → CaCO3(s)

Q: Consider the following reactions:  Fe2O3 (s) + 3CO (g)  →  2Fe (s) + 3CO2 (g)      ΔH = -28.0 kJ…

A: From given data Calculate : ∆H° = ? For 3Fe2O3 (s) + CO (g) → CO2 (g) + 2Fe3O4 (s)

Q: From the enthalpies of reaction: 2 C(s) + O2(g) → 2 CO(g) ΔH =…

A:

Q: Calculate the enthalpy change for the reaction C2H2(g) + 2H2(g) → C2H6(g)     ΔrH = ? from the…

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

Q: Find the ΔH (in kJ) for the reaction: PCl3(l)  +  Cl2(g)  →  PCl5(s)   Given: 2 P (s)  +  3…

A: According to hess’s law :- When reactants are converted to products the chage in enthalpy is same…

Q: CH3OH (l) + 3/2 O2 (g) → CO2 (g)  + 2 H2O (l), ΔH = -726.4 KJ/mol C (graphite) + O2 (g)  → CO2 (g),…

A: Given reactions are  1) CH3OH (l) + 3/2 O2 (g) → CO2 (g)  + 2 H2O (l),…

Q: Given the following reactions:             N2(g) + 2O2(g) → 2NO2(g)      ΔH = 66.4 kJ…

A:

Q: 1. Find the enthalpy of reaction ΔrHo for  the following reaction :  2 S(s) + 3 O2(g) → 2 SO3(g).…

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

Q: Given the following reactions:             N2(g) + 2O2(g) → 2NO2(g)      ΔH = 66.4 kJ…

A: • The desired equation is,       N2(g) + O2(g) → 2NO(g) ; ∆H= ??    • The given thermochemical…

Q: Calculate the enthalpy change for the reaction: C2H4(g)  +  H2(g)  →  C2H6(g) C2H4(g)  +…

A:

Q: The standard enthalpy change for the following reaction is -851 kJ at 298 K. 2 Na(s) + O2(g) +…

A:

Q: Calculate ΔH (in kJ/mol) for the reaction shown below: ClF(g)+F2(g)→ClF3(g) Use the following…

A:

Q: Calculate the enthalpy change (in kJ) for the reaction below using the information given: 2C₂H6(g)…

A: As per Hess's law, when a reaction takes place by more than one step,the total enthalpy of the…

Q: Calculate ΔHrxn for the following reaction: CaO(s)+CO2(g)→CaCO3(s) Use the following reactions and…

A:

Q: enthalpy change for the reaction 2C8H18(l) + 17O2(g) → 16CO(g) +

A: According to Hess's law we can treat thermodynamic equations like algebraic equations i. e. We can…

Q: Use the example shown to calculate the reaction enthalpy, ΔH, for the following reaction:…

A:

Q: CH3OH (l) + 3/2 O2 (g) → CO2 (g)  + 2 H2O (l), ΔH = -726.4 KJ/mol C (graphite) + O2 (g)  → CO2 (g),…

A: Hess’s law of constant heat summation- Change in enthalpy for a reaction is independent on path or…

Q: The standard enthalpy change for the following reaction is -479 kJ at 298 K.

A: 1) Heat energy change at constant temperature and pressure is called enthalpy change (or) Heat of a…

Q: Find ΔHrxn for the reaction:                3 H2(g) + O3(g) → 3 H2O(g)         Using the following…

A: Reactions with known enthalpy changes are the following. H2Og→H2g+12O2g       ∆Hreaction=+241.8 kJ…

Q: Calculate the enthalpy of reaction, ΔHrxn, for 2SO2(g) + O2(g) → 2 SO3(g) Given, S(s) + O2(g) →…

A: Given, S(s) + O2(g) → SO2(g) ΔH= −299 kJS(s) +3/2O2(g) → SO3(g) ΔHsol= −395 kJ Calculate the…

Q: Calculate ΔH for the following reaction: 4 Cu(s) + 2 NO2 (g) → 4 CuO(s) + N2(g) Given the following…

A:

Q: 372.5

A: Given: PCl5(g)  →  PCl3(g)  +  Cl2(g)    ΔH-? P4(s)  +  6Cl2(g)  →  4PCl3(g)            ΔH = -2439…

Q: Calculate the enthalpy of the reaction (ΔH) for the following reaction:…

A: The enthalpy of the desired reaction can be determined using Hess’s Law. It states that the enthalpy…

Q: Use the following information to determine the enthalpy for the reaction shown be CHĄ(g) + H2O(g) →…

A: We have to find enthalpy of reaction.

Q: The standard enthalpy change for the following reaction is 561 kJ at 298 K. Cd(OH)2(s) → Cd(s) +…

A: Cd(OH)2 (s)  -----> Cd(s) + O2(g)  + H2(g)   ∆Ho1 = 561 kJ   ........................(1) Cd(s) +…

Q: What is the enthalpy change for the first reaction? Fe2O3(s) → 2Fe(s) + 3/2O2(g) ΔH =  4Fe(s) +…

A:

Q: As an alternative to combustion, coal gas can undergo a process called methanation.  3 H2(g)  +…

A:

Q: What is the enthalpy change for the first reaction? CH4(g) + 1/2O2(g) → CH3OH(g) ΔH =

A:

Q: The standard enthalpy change for the following reaction is 450 kJ at 298 K Cu(OH)2(s) → Cu(s) +…

A: Given:

Q: Find the ΔH for the reaction below, given the following reactions and subsequent ΔH values: C3H8(g)…

A: Using Hess's law,  Enthalpy of reaction remains constant whether it completes in single step or more…

Q: From the following enthalpies of reaction: 2 H2(g) + O2(g) → 2 H2O(l)…

A:

Q: Given the following reactions: 2S(s) + 3O2(g) → 2SO3(g)                 ΔH = -790 kJ S(s) + O2(g)…

A: Hess's law is defined as amount of energy released or absorbed is same wheather the reaction take…