Question

Activation energy (Ea) is the energy required for a reaction to occur. The reaction with Ea = +45 kJ/mol is more likely to proceed A lower activation energy means that molecules need less energy to reach the transition state, making the reaction more likely to proceed. Since 45 kJ/mol is lower than 70 kJ/mol, the reaction with Ea = +45 kJ/mol will happen more easily
. rephrase like a 8th grader

Answer 1

Activation energy (Ea) is the energy needed for a reaction to happen. If a reaction has an Ea of +45 kJ/mol, it means that it takes less energy for the reaction to occur compared to one that has an Ea of +70 kJ/mol. Since 45 kJ/mol is lower than 70 kJ/mol, the reaction with 45 kJ/mol is more likely to happen easily.