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The Volume Change Associated with a Chemical Reaction Is Often Δ\Delta

Question 50

Multiple Choice

The volume change associated with a chemical reaction is often approximated as being directly proportional to the change in the number of moles of gas (moles of gaseous products - moles of gaseous reactants) .The combustion of methanol at 25°C and 1 atm releases about 1453 kJ of heat.Which of the following correctly describes the relationship between vE and Δ\Delta H? 2 CH3OH(  The volume change associated with a chemical reaction is often approximated as being directly proportional to the change in the number of moles of gas (moles of gaseous products - moles of gaseous reactants) .The combustion of methanol at 25°C and 1 atm releases about 1453 kJ of heat.Which of the following correctly describes the relationship between vE and  \Delta H? 2 CH<sub>3</sub>OH(   ) + 3 O<sub>2</sub>(g)  \to  2 CO<sub>2</sub>(g) + 4 H<sub>2</sub>O(   )  A)   \Delta H < -1453 kJ, \Delta E = -1453 kJ  B)   \Delta H > -1453 kJ, \Delta E = -1453 kJ  C)   \Delta H = -1453 kJ, \Delta E > -1453 kJ  D)   \Delta H = -1453 kJ, \Delta E < -1453 kJ  E)   \Delta H = -1453 kJ, \Delta E = -1453 kJ  ) + 3 O2(g) \to 2 CO2(g) + 4 H2O(  The volume change associated with a chemical reaction is often approximated as being directly proportional to the change in the number of moles of gas (moles of gaseous products - moles of gaseous reactants) .The combustion of methanol at 25°C and 1 atm releases about 1453 kJ of heat.Which of the following correctly describes the relationship between vE and  \Delta H? 2 CH<sub>3</sub>OH(   ) + 3 O<sub>2</sub>(g)  \to  2 CO<sub>2</sub>(g) + 4 H<sub>2</sub>O(   )  A)   \Delta H < -1453 kJ, \Delta E = -1453 kJ  B)   \Delta H > -1453 kJ, \Delta E = -1453 kJ  C)   \Delta H = -1453 kJ, \Delta E > -1453 kJ  D)   \Delta H = -1453 kJ, \Delta E < -1453 kJ  E)   \Delta H = -1453 kJ, \Delta E = -1453 kJ  )


A) " Δ\Delta H < -1453 kJ, Δ\Delta E = -1453 kJ"
B) " Δ\Delta H > -1453 kJ, Δ\Delta E = -1453 kJ"
C) " Δ\Delta H = -1453 kJ, Δ\Delta E > -1453 kJ"
D) " Δ\Delta H = -1453 kJ, Δ\Delta E < -1453 kJ"
E) " Δ\Delta H = -1453 kJ, Δ\Delta E = -1453 kJ"

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