In the previous blog posts, we have talked about the different Standard Enthalpy Changes of Reactions as well as look into using Energy Cycles with Hess’ Law to solve Chemistry questions related Chemical Energetics.
Today, i am going to re-post a question for discussion which i have blogged about several years back. This questions is evergreen and you will be seeing such questions again in your upcoming A-Level H2 Chemistry examinations.
The following question was sent by one of our A-Level JC1 H2 Chemistry students in Singapore.
It is a very is simple yet interesting MCQ question and requires the students to be very good in drawing the Energy Cycle Diagram, in order to solve the question.
In fact, you can also solve this question using Algebraic Method.
My student thinks that the answer should be option “B”‘. Do you agree with her?
Show your working or brief explanation on arriving at your answer.
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