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The heat of combustion of methane at 298K is expressed by
C H 4 g + 2 O 2 g → C O 2 g + 2 H 2 O l , Δ H = − 890.2 k J . The magnitude of Δ E of the reaction at this temperature is
  • a)
    Infinity
  • b)
    Less than Δ H
  • c)
    Equal to Δ H
  • d)
    Greater than Δ H
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The heat of combustion of methane at 298K is expressed byC H 4 g + 2 O...
→ C O 2 g 2 H 2 O g

The balanced chemical equation shows that 1 mole of methane (CH4) reacts with 2 moles of oxygen (O2) to produce 1 mole of carbon dioxide (CO2) and 2 moles of water (H2O). The heat of combustion of methane at 298K is -890.4 kJ/mol, which means that 890.4 kJ of heat is released when 1 mole of methane is burned in excess oxygen to produce 1 mole of carbon dioxide and 2 moles of water. This is an exothermic reaction, meaning that heat is released as a product of the reaction.
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The heat of combustion of methane at 298K is expressed byC H 4 g + 2 O 2 g → C O 2 g + 2 H 2 O l , Δ H = − 890.2 k J . The magnitude of Δ E of the reaction at this temperature isa)Infinityb)Less than Δ Hc)Equal to Δ Hd)Greater than Δ HCorrect answer is option 'B'. Can you explain this answer?
Question Description
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