The vaporisation of a certain element at 24.0 oC has the following enthalpy and entropy values: Hvap = 3.40 kJ mol-1     and Svap = 246 J K-1 mol-1. What is the total entropy change (Stot) for the vaporisation

Q: Calculate ΔH for the reaction2 C(s) + H2(g) -----> C2H2(g)given the following chemical equations…

A: Given,

Q: Consider the following reaction at 235°C and 1.00 atm: CH3 CI(g) + H2 (9) → CH4 (g) + HC1(g) For…

A:

Q: Calculate the ΔH for the reaction: 4 NH3 (g) + 5 O2 (g) --> 4 NO (g) + 6 H2O (g) from the following…

A: According to Hess's law, the enthalpy change of a reaction is independent of the number of steps…

Q: d)The ΔH°f of Ar(g) is   1.positive. 2.negative. 3.zero. 4.must be determined experimentally.…

A: The ΔH°f of Ar(g) is 1.positive. 2.negative. 3.zero. 4.must be determined experimentally

Q: A 0.497 g sample of liquid C5H12 was combusted using excess oxygen gas inside a bomb calorimeter,…

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Q: For the reaction H2(g) + F2(g). - 2 HF(g) AG° = -546.2 kJ and ASO - 14.1 J/K at 281 K and 1 atm.…

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined…

Q: Calculate "work" and "change in internal energy" for the conversion of three moles of ethanol at 78…

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Q: From the following enthalpies of reaction find ΔHrxn for 2 HCl(g) + F2(g) ---> 2 HF(l) + Cl2(g):  4…

A: Given, 4 HCl(g) + O2(g) ---> 2 H2O(l) + 2 Cl2(g); ΔH = -148.4 kJ/mol1/2 H2(g) + 1/2 F2(g) --->…

Q: The vaporisation of a certain element at 23.0 oC has the following enthalpy and entropy values:…

A:

Q: When 11.9 g of barium bromide (BaBr2) is dissolved in 107 g of water in a styrofoam calorimeter of…

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Q: When 12.0 g (0.100 mol) of MgSO,(s) is dissolved in water in a constant pressure calorimeter, the…

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Q: Use Hess’s Law to determineDH for the reaction     CO(g)  +  ½ O2 (g) ®  CO2(g),  given that…

A: According to the Hess's law the change in enthalpy of a reaction is equal whether it happens in a…

Q: The standard enthalpy of formation of gaseous H2O at 298 K is -241.82 kJ/mol. What is the ΔH at 373…

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Q: From the following reaction and data, find     (a) S o     of SOCl2     (b) T at which…

A: (a)The quantity that predicts the spontaneity of a process is called Gibbs free energy. The…

Q: When heated, CaCO, decomposes into CaO and CO, according to the following equation: CaCO,(s)= CaO(s)…

A: The importance of Gibbs energy is that it gives information about the spontaneity of the reaction or…

Q: The vaporisation of a certain element at 23.0 oC has the following enthalpy and entropy values:…

A:

Q: For the reaction H₂(g) + Cl₂(g) →→→ 2 HCI(g) AG° -191.0 kJ and AS° = 20.0 J/K at 321 K and 1 atm.…

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Q: Calculate the ΔH for the reaction: C2H4 (g) + H2 (g) --> C2H6 (g), from the following data:   C2H4…

A:

Q: Molar masses: MH = 1 g mol-l; Mo=16 g mol-1 Specific heat capacity at constant pressure: C, (H2O, 1)…

A: At first, it is given 180 g ice and 90 g water in liquid phase, each at 0o C, and 54 g of water in…

Q: In a bomb calorimeter, 6.251 g of propane gas was ignited in the presence of excess oxygen gas to…

A: For any chemical reaction, the enthalpy is considered as the state function that is it depends on…

Q: We can use Hess’s law to calculate enthalpy changes thatcannot be measured. One such reaction is the…

A: The ans is as given below:

Q: The standard enthalpy of combustion of solid carbon to form carbon dioxide gas is -393.7 kJ per mol…

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Q: For the reaction 4HCI(g) + O₂(g)—2H₂O(g) + 2Cl₂(g) AH° = -114.4 kJ and AS° = -128.9 J/K The maximum…

A: We know , Maximum Work done = ∆G0 = ∆H0 - T∆S0

Q: From the following thermochemical equations; calculate the standard enthalpy of formation of calcium…

A: The thermochemical equations given are Ca(OH)2 (s) →CaO (s) + H2O (l), ∆rH° = 65.2 kJ/mol…

Q: Consider the reactions that produce acetic acid: CHA (9) + CO2(g) → CH; CO2H(1) CH; OH(9) + CO(g) →…

A: The standard thermodynamic data for the given reactants and products at given temperature is,

Q: 2 Fe(s) + 3 Cl2(g) => 2 FeCl3(s)         from Fe(s) + Cl2(g) => FeCl2(s);                ΔHo  =…

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Q: or the reaction N2(g) + O2(g)  2 NO(g) G° = 172.1 kJ and S° = 24.9 J/K at 340 K and 1 atm. This…

A: Given : G° = 172.1 kJ  S°= 24.9 J/K at 340 K and 1 atm.

Q: Consider the reaction: 2 NO2 (g) = N204 (g). The standard-state enthalpies of formation (AH;^) for…

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Q: Calculate the ΔHo for methane gas , CH4, produced from graphite and hydrogen gas according to the…

A: The enthalpy change is defined as the amount of heat absorbed or evolved in the transformation of…

Q: A 0.576 g sample of liquid C5H12 was combusted using excess oxygen gas inside a bomb calorimeter,…

A: Given, mass of the sample is 0.576 g of liquid C5H12  Heat capacity of calorimeter is 4.957 Kj/°c…

Q: From the following enthalpies of reaction find ΔHrxn for 2 HCl(g) + F2(g) ---> 2 HF(l) + Cl2(g): 4…

A: The main reaction is – 2HCl g + F2g →2HFl + Cl2g

Q: When ethanol (CH3CH2OH) burns in oxygen, carbon dioxide and water are formed. (i)  Write the…

A: Combustion is a process that occurs in the presence of oxygen.

Q: Calculate the ΔHo for methane gas , CH4, produced from graphite and hydrogen gas according to the…

A: The enthalpy of formation (ΔHf) is the enthalpy change that accompanies the formation of a compound…

Q: A styrofoam calorimeter contains 60.0 mL of o.750 M H,C,H¸O, at 22.8°C. When 9.83 g NaHCO, is added…

A: Given reaction between citric acid and sodium bicarbonate as follows: H3C6H5O7 (aq) +  3NaHCO3…

Q: standard enthalpy change for this reaction.

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Q: When 2.25 mg of anthracene, C14H10(s), was burned off in a bomb calorimeter, the temperature…

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Q: 4. What mass of propane must be burned to supply 700. kJ as heat? The thermochemical equation for…

A: Given thermochemical equation for combustion of propane is C3H8(g) + 5O2(g) ----> 3CO2(g) +…