Question:medium
The standard heat of formation of CH\(_4\), CO\(_2\) and H\(_2\)O (l) are \( -76.2 \), \( -394.8 \) and \( -285.82 \) kJ mol\(^{-1} \), respectively. Heat of vaporization of water is 44 kJ mol\(^{-1} \). Calculate the amount of heat evolved when 22.4 L of CH\(_4\), kept under normal conditions, is oxidized into its gaseous products
The standard heat of formation of CH\(_4\), CO\(_2\) and H\(_2\)O (l) are \( -76.2 \), \( -394.8 \) and \( -285.82 \) kJ mol\(^{-1} \), respectively. Heat of vaporization of water is 44 kJ mol\(^{-1} \). Calculate the amount of heat evolved when 22.4 L of CH\(_4\), kept under normal conditions, is oxidized into its gaseous products
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Always check the physical state of the products. If the question asks for "gaseous products," you must subtract the heat of vaporization from the enthalpy of liquid water formation.
Updated On: May 1, 2026
- 802 kJ
- 878.4 kJ
- 702 kJ
- 788.4 kJ
- 500 kJ
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The Correct Option is D
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