How much heat (in kJ) would be required to convert 26.0 g of ice to water at 0.00°C? (AHfus = 6.01 kJ/mol for water)

Q: 25.0 kJ  of heat is added to   52.0 g of ice at -10.0°C . What is the temperature of the water (in…

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Q: What amount of heat (in kJ), is required to convert 29.3 g of an unknown solid (MM = 83.21 g/mol) at…

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Q: Calculate the heat change (in kJ) for the conversion of 500 g of water vapor at 130.0°C to ice at…

A: Give: Mass of water = 500 g. Initial temperature of water = 130.0 oC And final temperature of water…

Q: The vapor pressure of ethanol is 100 mmHg at 34.9°C. What is its vapor pressure at 67.5°C?(ΔHvap for…

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Q: How much ice (in grams) would have to melt to lower the temperature of 352 mL of water from 25 °C to…

A: Given   The volume of water is 352 mL. The given temperature values are 25.0 ˚C and 5.0 ˚C. The…

Q: How much energy is needed to convert 64.2 grams of ice at 0.00°C to liquid water at 75.0°C? specific…

A: 64 g ice, first  ice at 0℃ fused to Water at 0℃.  Heat energy(q1)= m × ∆Hf Here, m= mass of ice=64g…

Q: How much heat in kJ is required to turn 33.0 g of ice at -75.0°C to steam at 115.0 °C. ΔHfus = 6.02…

A: Given:  Mass of ice = 33.0 gm  Molar mass of ice = 18 g/mol  Moles of ice = 33/18 = 1.833 moles…

Q: How much heat (in kJ) is required to warm 13.0 g of ice, initially at -15.0 ° C, to steam at 109.0 °…

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Q: How much heat would be required to convert 15.1 g of ice to water at 0°C? (∆Hfus = 6.01 kJ/mol for…

A: molar mass of water = 18 g/mol Given information: ∆Hfus = 6.01 kJmol

Q: How much ice (in grams) would have to melt to lower the temperature of 355 mL of water from 24 ∘C to…

A: Given,Volume of water = 355mL.Initial temperature = 240C.Final temperature = 40C.

Q: 13. How much heat in kJ is needed to warm 31.6 g of ice from 10 °C to steam at 175 °C. The heat…

A: Mass of ice = 31.6 g  Molar mass of ice = 18.00 g.mol-  Delta Hfusion = 6.02 × 103 J.mol-  Delta…

Q: How much energy (in Joules) does it take to completely vaporize 250 ml of water that is already at…

A: we have to calculate the energy needed to vaporize 250 ml of water

Q: A 150.0 gram sample of water ice initially at 0 oC is heated, eventually melting and achieving a…

A: Since the water is initially in solid phase i.e it is ice. Hence first it will melt at 0 oC and then…

Q: What quantity of heat (in kJ) would be required to convert 12.9 g of ice to water at 0.00°C? (∆Hfus…

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Q: From the data below, calculate the total heat (in J) needed to convert 15.00g of ice at −5.75°C to…

A: Determine heat released when temperature is increased from -5.75oC to 0oC ice:

Q: How much heat energy, in kilojoules, is required to convert 59.0 g of ice at −18.0 ∘C to water at…

A: Specific heat of ice (Cp) = 2.10 J/g. oCspecific heat of water (Cp) = 4.18 J/g. oCheat of fusion…

Q: The vapor pressure of liquid HF is 339.6 mmHg at a temperature of 271.7 K. The enthalpy of…

A: The relationship between the vapour pressures at different temperature is given by clausius…

Q: Calculate the amount of heat (in kJ) required to convert 99.0 g of ice to liquid water at 0.0°C

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Q: What is the amount of heat in kilojoules required to convert 447.0 g of ice at −15.2°C to liquid…

A: Given, Mass of ice = 447.0g. Temperature of ice = -15.2oC. Temperature of water = 35.6oC. Specific…

Q: The heat of fusion of water is 333 kJ/kg at 0°C and the heat of vaporization is 2260 kJ/kg at 100°C.…

A: Given mass of ice is 2.50 kg  Given heat of fusion water is 333 kJ/kg at 0° C and heat of…

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.