Recent questions in ThermoChemistry

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What is the enthalpy change for the combustion of 1 mole of propane (C3H8) given the enthalpies of formation of CO2, H2O, and C3H8? C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g) ΔH° = ?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change involved in the isomerization reaction of hexene from trans-hexene to cis-hexene? Given the standard enthalpy of formation values for trans-hexene and cis-hexene are -123 kJ/mol and -130 kJ/mol respectively.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the isomerization of butene-1 to butene-2 at standard conditions, given the enthalpies of formation of butene-1, butene-2, and hydrogen gas?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the hydrolysis of one mole of sucrose (C12H22O11) to glucose (C6H12O6) and fructose (C6H12O6), given the standard enthalpies of formation for sucrose, glucose, and fructose?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the amount of energy required to melt 50 grams of ice at 0 °C to water at the same temperature? Given the enthalpy of fusion of water is 6.01 kJ/mol.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the change in enthalpy when 2 moles of iron(III) oxide are reduced to iron metal in the presence of hydrogen gas? (Given: ΔH°f[Fe2O3] = -824.2 kJ/mol, ΔH°f[Fe] = 0 kJ/mol)

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the bond dissociation energy of the carbon-hydrogen bond in methane (CH4) when using experimental data from a combustion reaction that indicates the combustion of 1 mole of methane releases 890.4 kJ of heat?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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Sure, here's a precise question:Calculate the amount of heat required to vaporize 50 g of water at its boiling point (100°C) if its enthalpy of vaporization is 40.7 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the amount of heat required to completely vaporize 200 g of water at its boiling point of 100°C, given that the enthalpy of vaporization of water is 40.7 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the amount of heat required to melt 25 g of ice at 0°C? The enthalpy of fusion of ice is 333 J/g.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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Question: The heat of sublimation of iodine is 62.44 kJ/mol. Calculate the amount of heat required for subliming 20 g of iodine at its melting point of 387 K.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the amount of heat released when 2.5 grams of ethanol (C2H5OH) burns completely in excess oxygen, given that the heat of combustion of ethanol is -1371 kJ/mol and the molar mass of ethanol is 46.07 g/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the amount of heat released when 2.5 moles of propane (C3H8) is completely burned in oxygen gas (O2) according to the balanced equation: C3H8 + 5O2 → 3CO2 + 4H2O given that the standard enthalpy of combustion of propane is -2220 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the amount of heat needed to melt 25 grams of ice at its melting point if its enthalpy of fusion is 6.02 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the amount of heat involved in the neutralization of 25.0 mL of 0.1 M HCl with 25.0 mL of 0.1 M NaOH, given the heat of neutralization of HCl and NaOH to be -57.1 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the amount of heat energy required to vaporize 50 grams of water at its boiling point of 100°C, given that the enthalpy of vaporization of water is 40.7 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the heat capacity of a 50 g copper block when heated from 25°C to 95°C, given that the specific heat capacity of copper is 0.385 J/g·°C? Calculate the amount of heat energy required to raise the temperature of the copper block by 70°C.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the amount of heat energy required to melt 15 grams of ice at 0°C? The enthalpy of fusion of water is 6.01 kJ/mol.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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1 answer 31 views

What is the amount of heat energy required to melt 25 grams of ice at 0°C, given that the enthalpy of fusion of water is 6.01 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

0 votes

1 answer 35 views

What would be the amount of heat energy required to change 100 grams of ice at -10°C into liquid water at 20°C? Given, the enthalpy of fusion of ice = 6.01 kJ/mol and the specific heat capacity of liquid water = 4.18 J/g°C.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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