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 |Δ H f°| of ethanol at 298.15 K is _ _ _ ×10² kJ mol ⁻¹. (Nearest integer) Given: Standard enthalpy for combustion of graphite =-393.5 kJ mol ⁻¹; Standard enthalpy of formation of water (l) =-285.8 kJ mol ⁻¹; Molar mass in g mol ⁻¹ of C, H, O are 12, 1 and 16 respectively

Chemical Thermodynamics: JEE Main 2026 Chemistry question

JEE Main 2026 · 4 Apr, Evening shift · Q71

JEE Main 20264 Apr, Evening shiftChemistryHardChemical Thermodynamics84× since 2002

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 ______

\times10^2

kJ mol

^{-1}

. (Nearest integer) Given: Standard enthalpy for combustion of graphite

=-393.5

kJ mol

^{-1}

; Standard enthalpy of formation of water (

l

)

=-285.8

kJ mol

^{-1}

; Molar mass in g mol

^{-1}

of C, H, O are 12, 1 and 16 respectively

Your answerType your answer. Integers and decimals are accepted.

JEE Main 2026 Chemical Thermodynamics Question with Solution (4 Apr Evening shift, Q71) | JEE Arc

JEE Main 2026 · 4 Apr, Evening shift · Q71

JEE Main 20264 Apr, Evening shiftChemistryHardChemical Thermodynamics84× since 2002

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 ______

\times10^2

kJ mol

^{-1}

. (Nearest integer) Given: Standard enthalpy for combustion of graphite

=-393.5

kJ mol

^{-1}

; Standard enthalpy of formation of water (

l

)

=-285.8

kJ mol

^{-1}

; Molar mass in g mol

^{-1}

of C, H, O are 12, 1 and 16 respectively

Your answerType your answer. Integers and decimals are accepted.