For each of the following substances, compute the final temperature when sensible heat in th 3 kJ mol is added to the subcooled liquid at 25°C and atmospheric pressure. (a) methanol (b) ethanol (c) benzene (d) toluene (e) water

Q: A 0.550 g0.550 g sample of steam at 103.2 ∘C103.2⁢ ∘C is condensed into a container with 4.67 g4.67…

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Q: Calculate the heat absorbed when 20.89 g of some substance at 10.62 degrees Celsius is completely…

A: Interpretation - To calculate the heat absorbed when 20.89 g of some substance at 10.62 degrees…

Q: Consider the following two alkanes: C3H12 (pentane) C,H10 (butane) (a) Which would have the lower…

A: "The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals…

Q: The fragment of H2O phase diagram is shown. What transition (e.g. liquid->solid, solid->gas...…

A: In the given phase diagram of water,  at -5o to 0o   solid ice is present. On heating -5o to 0o…

Q: A substance boils at 44.3°C under atmospheric conditions. Under 0.308 atm it boils at 12.7°C.…

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Q: Two 20.0 g ice cubes at −15.0 ∘C−15.0 ∘C are placed into 295 g295 g of water at 25.0 ∘C.25.0 ∘C.…

A: Given : Mass of ice cube = 20.0 g Number of ice cubes = 2  Initial temperature of ice = -15.0 oC…

Q: Calculate the heat, in kJ, exchanged in the conversion of 20.0 g of steam at 104 °C to water at 10.5…

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Q: Two 20.0 g ice cubes at −20.0 ∘C−20.0⁢ ∘C are placed into 245 g245 g of water at 25.0 ∘C.25.0⁢ ∘C.…

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Q: calculate the enthalpy change upon converting 0.9 moles of ice at -5.4 °C to steam at 103°C under a…

A: Given moles of water solid ( ice ) n  = 0.9  moles   The energy required in each process which will…

Q: Calculate the ΔH (in KiloJoules) required to cool 1.0-Kg liquid water at 25°C to 0°C (in KJ).…

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Q: There are three sets of sketches below, showing the same pure molecular compound (water, molecu…

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Q: a)What is the heat capacity of liquid n-hexane at 48.0C ? b) What is the heat capacity of gaseous…

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Q: Based on the thermodynamic properties provided for methanol (below), select from the following list…

A: Given : Mass of methanol = 5.0 Kg = 5000 gMolar mass of methanol= 32.04 g/molTherefore, Moles of…

Q: The following information is given for water at latm: boiling point = 100 °C AHvap(100 °C)-40.7…

A: The mass of solid water sample is = 44.1 g The heat of fusion of water at its normal melting point…

Q: The main reason that distillation is a costly method forpurifying water is the high energy required…

A: Distillation is the process in which components of a mixture are separated on basis of different…

Q: What is the (a) NaCl(s) (b) H,O(1) (c) CH4(1)

A: Intermolecular forces present between given compounds:

Q: A diamond is said to last forever. Many believe this eternal existence is related to its hardness…

A: Diamond is an allotrope of carbon. It is a solid form of carbon with its atoms ordered in a crystal…

Q: i) Define "enthalpy of vaporization; AHvap. The enthalpy of vaporization of a compound is nearly…

A: i) Enthalpy of vaporization is defined as the amount of energy required to vaporise the 1 mole of…

Q: Why is it important that the heat capacity, latent heat of fusion and latent heat of vaporization of…

A: Heat capacity is the anount of heat required to  increase a particular amount of the substance.…

Q: If 42.0 kJ of heat is added to a 32.0-g sample of liquid methaneunder 1 atm of pressure at a…

A: Since the heat added is very high (42000 J). And since the temperature of the methane was already…

Q: The molar heats of formation of liquid and gas phase water are given by: kJ ΔΗ, = -285.8 mol AH =…

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

Q: Enthalpy of vaporization of CF2C12 at its normal boiling point of -29.2 °C is 20.25 kJ mol-1…

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Q: How much heat (in kJ mol–1 to two decimal places) is required to melt 300.0 g of water (H2O; 18.02 g…

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Q: Predict the intermolecular forces of attraction expected to act on each of the following substances…

A: Intermolecular force : Intermolecular forces are the forces of attraction /repulsion which acts…

Q: true or false The heat of fusion of Au at constant pressure is approximately equal to the heat of…

A: This question is related to the thermodynamics. The given statement is in regard to the relation…

Q: Round your answers to 6 decimal places.

A: A technique of vaporization cooling to cool a room in the desert climate has been incorporated and…

Q: Two 20.0 g ice cubes at −21.0 ∘C−21.0 ∘C are placed into 265 g265 g of water at 25.0 ∘C.25.0 ∘C.…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: a Table, Introduction Classify the following compound as an alkane, alkene, or alkyne and give the…

A: Organic compounds which contain single, double and triple bonds between consecutive carbon atoms are…

Q: Given T(K)1 = 338.12 with P1 = 52.301 torr and T(K)2 = 369.52 with P2 = 141.801 torr, find the heat…

A: Given data, T(K)1 = 338.12 P1 = 52.301 torr T(K)2 = 369.52 P2 = 141.801 torr

Q: The heat of fusion for a material can be found by AHfus = m x Cp x AT where AHfus is the heat of…

A: Given: Mass of substance X, m = 10.00 g Specific heat, Cp = 4.18 J/g.oC And ΔT = 10.00 oC

Q: What is the boiling point of water in a pressure cooker with a pressure of 2.00 atm? (The enthalpy…

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Q: What is the heat energy required to change 10 grams of liquid water at 0ºC to 100ºC?

A: Given,  Mass of liquid water= 10 grams Initial temperature= T1= 0 °C Final temperature = T2 = 100 °C…

Q: Constants Periodic Table Heat, q. is energy transferred between a system and its surroundings. For a…

A: From given datas Both parts solved, enthalpy change and mass of ice in grams is calculated as…

Q: 4) Predict a decrease (highest to the lowest) in the enthalpy of vaporization for the following…

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Q: The melting of Mg3(PO4)2 (s) is a(n) Ophysical O sublimation exothermic exothermic but stable…

A: In physical process only phase transition occurs. In physical process no new compound is formed and…

Q: A thermally insulated container (closed system) is dropped from a certain height and filled with…

A: Answer: Since, all the energy that has been lost in the fall is invested in increasing the…

Q: 8,The following combination of signs for heat and work (respectively, heat first, work, next in the…

A: Gaining heat means heat is gained. This means reaction is endothermic. So, q is +ve.

Q: Thermodynamics and enthalpy Data: M(Pb) = 207 g mol AmeltH°(Pb) = 4.8 kJ-mol AvapH°(Pb) = 179.5…

A: Molar enthalpy of reaction can be calculated from the steps involved in the reaction.

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.