Question:medium
If 3.365 g of ethanol (l) is burnt completely in a bomb calorimeter at 298.15 K, the heat produced is 99.472 kJ. The \(|\Delta H_f^\circ|\) of ethanol at 298.15 K is _______ \(\times 10^2\) kJ \(\cdot mol^{-1}\). (Nearest integer)
Given: Standard enthalpy for combustion of graphite = \(-393.5\) kJ \(\cdot mol^{-1}\)
Standard enthalpy of formation of water (l) = \(-285.8\) kJ \(\cdot mol^{-1}\)
Molar mass in \(g \cdot mol^{-1}\) of C, H, O are 12, 1 and 16 respectively
If 3.365 g of ethanol (l) is burnt completely in a bomb calorimeter at 298.15 K, the heat produced is 99.472 kJ. The \(|\Delta H_f^\circ|\) of ethanol at 298.15 K is _______ \(\times 10^2\) kJ \(\cdot mol^{-1}\). (Nearest integer)
Given: Standard enthalpy for combustion of graphite = \(-393.5\) kJ \(\cdot mol^{-1}\)
Standard enthalpy of formation of water (l) = \(-285.8\) kJ \(\cdot mol^{-1}\)
Molar mass in \(g \cdot mol^{-1}\) of C, H, O are 12, 1 and 16 respectively
Given: Standard enthalpy for combustion of graphite = \(-393.5\) kJ \(\cdot mol^{-1}\)
Standard enthalpy of formation of water (l) = \(-285.8\) kJ \(\cdot mol^{-1}\)
Molar mass in \(g \cdot mol^{-1}\) of C, H, O are 12, 1 and 16 respectively
Updated On: Apr 10, 2026
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Correct Answer: 3
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