Why is the ΔHvap higher than ΔHfus for any given compound?

Q: what is the value of Kc of the reaction at this temperature?

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Q: Given: Phosgene, COCl2, can be formed by the reaction: 2CHCl3(l)  + O2(g) ⟶ 2COCl2(g)  + 2HCl(g).…

A: Generally the enthalpy change of reaction is determined by using following formula.

Q: Calculate the value of AGº for the following reaction: 4 NO (g) + 6 H2O (g) 0 4 NH3 (g) + 5 O2 (g)…

A: standard Gibb's free energy can be determined using the standard gibbs free energy of formation of…

Q: Which ONE of the following reactions has positive AS? A NH,(g) + HCl(g) → NH,C(s) В N,(g) + 3 H,(g)…

A: We have to predict option having positive ∆S.

Q: If the ▲G0 for a reaction is -4.5 kcal/mol at 298 K, what is the Keq for this reaction? What is the…

A: Given: ∆Go = -4.5 kcal/mol ∆Ho = -3.2 kcal/mol

Q: A large bottle containing 883g of water at 4°C is removed from the refrigerator. How many kilojoules…

A: Heat, Q = cm∆T c is specific heat capacity of substance m is mass of substance ∆T = change in…

Q: 1. Calculate the AHrxn for the reaction, Sn (s) + Cl2 (g) → SnCl2 (s) AHrxn = ? Sn (s) + Cl2 (g) →…

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Q: Calculate the enthlapy of reaction (ΔH) in kJ for the reaction: 2A + B → E       ΔH =? Given these…

A: The given reaction is, 2A + B → E          The reactions involved in the given reaction are, 1) A +…

Q: Calculate the value of q (kJ) in this exothermic reaction

A: Number of moles = mass/molar mass  Molar mass of H2O2 = 34.0147 g/mol

Q: Calculate ^Hrxn for the reaction: Fe2O3 (s) + 3 CO (g) → 2 Fe (s) + 3 CO2 (g) Use the following…

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Q: 3. Calculate AH° for the reaction GeO(s) + ½ O2(g) → GeO2(s) given the following thermochemical…

A: the reaction is multiplied (or divided) by some factor, H must also be multiplied (or divided) by…

Q: Given that the reaction of 4 NH3 (g) + 5 O2 (g) 4 NO (g) + 3 H2O (g) AH = - 906 kJ What would AH for…

A: The correct option with explanation is provided in the next step:

Q: 13 of 48 Calculate AG° for the reaction, 2C2H2(9)+302(g)→4CO(g)+2H2O(g), given AG°; for…

A: The given chemical reaction is: 2C2H2(g) + 3O2(g) → 4CO(g) + 2H2O(g) The values of ∆Gof for all the…

Q: Write thermochemical equations for the decomposition of one mole of the following compounds into the…

A: The compound given is C2H5OH which is a liquid at 25 oC and 1 atm. The elements present in C2H5OH…

Q: Find the ∆H of the reaction. Show the complete and step by step solution. PCl5(g) -> PCl3(g) +…

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Q: For which of the attached reactions is ΔSo a positive value?

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Q: Determine the value of AH° in kJ for the following reaction: 2SO2(g) + O2(g) 2SO3(g) Select one: O…

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Q: MeO b. 1) NaOMe, MeOH 2) BrCH₂CH₂CH₂Br OMe 3) NaOMe, MeOH 4) H₂0, H*, heat NaOH, H₂O heat me

A: An organic reaction usually follows substitution, elimination, or addition reaction depending upon…

Q: The following information is given for diethyl ether at 1 atm: AHvap(34.4C°) = 357. 5J/g A…

A: Given: The mass of liquid diethyl ether is 30.40 g. The initial and final temperature of the sample…

Q: MgBr 1) M9CI 人, 1) H `MgBr 1) 2) Acid workup TH 2) H* 2) Acid workup MgBr 1) CHMgBr 1) 2) H" 2) Acid…

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Q: 4. Calculate the AH for the following reaction: NO 0 > NO2 Given the following information: 2 03 > 3…

A: Given:  2O3→3O2                     ∆H=-427kJO2→2O                         ∆H=+495kJNO+O3→NO2+O2…

Q: 8. Given the following data, what is the value of AH°t (in kJ) for the following reaction? 2 H2O20)…

A: Since ΔH0f for O2 = 0 And ΔH0f for any reaction is given by  ΔH0f  = ΔH0f (products) - ΔH0f…

Q: Calculate the heat of reaction delta H for the following reaction: 2HBr(g)——> H2(g)+ Br2(g) Round…

A: Bond enthalpy of H—H = 435 kJ.mol-1 Bond enthalpy of Br—Br = 192 kJ.mol-1 Bond enthalpy of H—Br =…

Q: A large bottle containing 883 g of water at 4 °C is removed from the refrigerator. How many…

A: Given that,Mass of water is 883 g.The initial temperature is 4˚C.The final temperature is 22˚C.It is…

Q: 3. In the following reaction, the products are not favoured at room temperature, but are favoured at…

A: Given-> CO2(g) + H2(g) <------> CO(g) + H2O(g)

Q: From the following enthalpies of reaction: H2 (g) +F2 (g) → 2HF (g) ∆H = −537 kJ C (s) + 2F2 (g)…

A: H2 (g) +F2 (g) → 2HF (g) ∆H1 = −537 kJ  ......................(1) C (s) + 2F2 (g) →CF4 (g) ∆H2 =…

Q: 6A + 2C 6D Determine the enthalpy(AH) in kJ of the above reaction using the reactions below: 6B 2C…

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

Q: Calcutlate the heat of reaction for: 2NaHCO3(s)->NaCO3+CO2(g)+2H2O(1)

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Q: What is the energy change (in kJ) when 0.487 kilograms of diethyl ether (C4H10O) is condensed from a…

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Q: 2HX(g) H2(g) + X2(g) Estimate the energy change (in kJ) for the reaction with the following X. F i…

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Q: What is the enthalpy change when 3.50 moles of silver chloride form? AgNO3 (aq)  +  NaCl (aq)  -->…

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Q: Calculate the ΔGO∆GO (in kJ/mol) for the following reaction at 25.0℃.…

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Q: hen nitrogen gas reacts with hydrogen gas to form ammonia, 92.31 der constant pressure and standard…

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Q: Calculate the enthapy for the following reaction N2(g)+ 202(g)- 2NO2(g) AH 777 k) N2) + Oz(g)-…

A: The enthalpy of reaction is extensive property , the enthalpy of given reaction is calculated using…

Q: Fe O3(s) + 3CO(g) → 2Fe(s) + 3CO;g); AH® = -26.8 kJ %3D FeO(s) + CO(g) -Fe(s) + CO2(g); AH° = -16.5…

A: The given equations are Let us number the final equation to be number 3.

Q: What is ∆G° for the reaction CH₃OH(g) → CO(g) + 2 H₂(g) at 25°C?

A: Given reaction at 25°C:  CH₃OH(g) → CO(g) + 2H₂(g) ∆G° value of CH₃OH(g)  = -162.42 KJ/mol ∆G° value…

Q: Determine ΔH for the third reaction from the information given.   C3H8(g) + 3 H2O(g) ↔ 3 CO(g) + 7…

A: Calculating ∆H for the given reaction by multiplying second reaction by 3 and adding to reaction 1.

Q: According

A: We will calculate value of q.

Q: In reaction 2, if we had used 4 grams of NaOH instead of 2 grams, would the heat gained by the…

A: As per the question, it is a neutralization reaction of HCl and NaOH HCl + NaOH →    NaCl +    H2O…

Q: Calculate the energy change (in kJ) for the combustion of 62.0 grams of propane?

A: A specific heat quantity is generated on reacting any substance with O2. This heat is generally…

Q: What is the significance of the sign of ΔHºrxn?

A: The ΔHºrxn is called the enthalpy of the reaction, or the heat of the reaction. The enthalpy is…

Q: Calculate the heat of reaction deltaH for the following reaction: 2H2(g)+O2(g)——>2H2O (g) Round your…

A: The reaction given is, => 2 H2 (g) + O2 (g) → 2 H2O (g)

Q: Given the following data, what is the value of ΔGf° (CH3OH(ℓ) at 25°C? CO(g) + 2 H2(g) ⇄ CH3OH(ℓ)…

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Q: Given the following reactions: Fe2O3(s) + 3 CO(g)→2 Fe(s) + 3 CO2(g); ΔH = −28.0kJ 3 Fe(s)+ 4…

A: Interpretation: From the given reaction enthalpies, the enthalpy of Fe2O3 to Co reaction is to be…

Q: The lower the change in free enthalpy associated with a reaction, the slower this reaction is. True…

A: Change in free energy is associated with spontaneity. The spontaneity of the reaction doesn't define…

Q: One mole of ammonium nitrate dissolves in water to produce aqueous ammonium ions and nitrate ions.…

A: we have to write the following equation:- Ammoniumnitrate + water

Q: 7) Given the Following Reactions: 1 X(s) +02(g) → X0(s) AH = -660 kJ XC03(s) → X0(s) + CO2(g) AH =…

A: Hess' law of constant heat summation: The Hess law states that the change of enthalpy in a chemical…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.