The combustion of what volume of ethane (C2H6), measured at 23.0°C and 752 mmHg, would be required to heat 855 g of water from 25.0°C to 98.0°C?
Interpretation:
The volume of ethane that is required to heat the mass of water has to be given.
Concept Introduction:
The change in enthalpy that is associated with the formation of one mole of a substance from its related elements being in standard state is called standard enthalpy of formation
(
The standard enthalpy of reaction is the enthalpy of reaction that takes place under standard conditions.
The equation for determining the standard enthalpies of compound and element can be given by,
Specific heat:
Specific heat can be defined as quantity of heat required to raise the temperature of
Where
c= Specific heat
The unit of specific heat is
Answer to Problem 6.94QP
The volume of ethane that is required to heat the mass of water is
Explanation of Solution
The combustion reaction is given as,
The heat released during the combustion is calculated as,
The heat requires to raise the temperature of water to
The combustion of one mole of ethane yields
The volume of ethane is calculated using the ideal gas equation,
The volume of ethane that is required to heat the mass of water is
The volume of ethane that is required to heat the mass of water was calculated as
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