Question
H2(g) + T2 (g) > 2HT A scientist proposes that the activation energy of the following reaction is +89.8 kJ, and the reaction
enthalpy is +53.6 kJ.
An H2 molecule and an I2 molecule collide with 64.3 kJ of energy. Will the reaction occur?
A. Yes, because the molecules have more energy than the reaction enthalpy.
B. No, because the molecules have less energy than the activation energy.
C. Inconclusive, because the molecules would have to collide with the correct orientation for the
reaction to proceed.
D. No, because the molecules have less energy than the reaction enthalpy.
enthalpy is +53.6 kJ.
An H2 molecule and an I2 molecule collide with 64.3 kJ of energy. Will the reaction occur?
A. Yes, because the molecules have more energy than the reaction enthalpy.
B. No, because the molecules have less energy than the activation energy.
C. Inconclusive, because the molecules would have to collide with the correct orientation for the
reaction to proceed.
D. No, because the molecules have less energy than the reaction enthalpy.
Answers
GPT-4o mini
To determine if the reaction will occur, we need to compare the energy of the colliding molecules with the activation energy required for the reaction to proceed.
1. **Activation Energy (Ea)**: This is the minimum energy that the reactants must possess for the reaction to occur; in this case, it is given as +89.8 kJ.
2. **Energy of Collision**: The molecules collide with an energy of 64.3 kJ.
Since the energy of the collision (64.3 kJ) is less than the activation energy (89.8 kJ), the collision does not provide enough energy for the reaction to proceed.
Therefore, the correct answer is:
**B. No, because the molecules have less energy than the activation energy.**
1. **Activation Energy (Ea)**: This is the minimum energy that the reactants must possess for the reaction to occur; in this case, it is given as +89.8 kJ.
2. **Energy of Collision**: The molecules collide with an energy of 64.3 kJ.
Since the energy of the collision (64.3 kJ) is less than the activation energy (89.8 kJ), the collision does not provide enough energy for the reaction to proceed.
Therefore, the correct answer is:
**B. No, because the molecules have less energy than the activation energy.**