Question

Calculate the amount of energy in the form of heat that is produced when a volume of 3.81 L of SO_2 is converted to 3.81 L of SO_3​ according to this process.

a) The change in energy is not determinable from the given information.
b) The change in energy is negative.
c) The change in energy is positive.
d) The change in energy is zero.

Answer 1

The change in energy is negative.

Step-by-step explanation:

The amount of energy in the form of heat produced when a volume of 3.81 L of SO₂ is converted to 3.81 L of SO₃ can be calculated using the given information. Since the reaction is exothermic, it releases energy in the form of heat. The heat released is proportional to the amount of substance undergoing the reaction. In this case, the heat released can be calculated by multiplying the number of moles of SO₂ by the energy change for the reaction (AH) per mole of SO₂:

Energy released = 3.81 L × (1 mol SO₂/22.4 L) × (-198 kJ/2 mol SO₂)

Therefore, the change in energy is negative, option (b).