What are the different types of JC Chemistry tuition classes available at your centre?

We have 3 modes of learning for students to choose from: weekly physical classes at Bishan; weekly online lessons via Zoom; and on-demand video lessons.

Are you the only Chemistry tutor conducting the classes or do you engage other tutors to do that?

Please be rest assured that I conduct all my classes personally and I do not engage other tutors to teach at my centre.

How well do your students perform after attending your H2 Chemistry tuition classes?

Most of my students showed improvements by at least 3 grades and more than 80% have attained distinction for A Levels. The earlier the students join my classes, the more confident I am in improving their grades.

What is your class size at Bishan?

Usually the class size is around 10 to 12 students. Max class size is 16 pax.

Is there makeup lesson if I miss a class?

Yes makeup lesson is available in the same week subject to availability. If makeup class is not possible, the student can view the recorded video lessons at Google Classroom.

Do you have trial lesson available? How much is it?

Yes we do. Fees for trial lesson are for Bishan class and for Zoom online class.

Does your centre offer O Level chemistry tuition? Do you teach IB / IP chemistry tuition? How about H1 Chemistry?

Chemistry Guru specialises in H2 Chemistry for JC1 and JC2 or IP Year 5 and IP Year 6 students only. Find out all the information about A Level H2 Chemistry and the detailed comparison between H1 and H2 Chemistry. We do not conduct lessons for H1 Chemistry, O Level Chemistry, IB Chemistry or IP Chemistry at IP Year 3 and IP Year 4.

Redox Reaction Worked Example 1

Let Chemistry Guru, Singapore's renowned JC Chemistry tuition centre, guide you through this question on redox reactions and mole concept.

redox worked example question

First we need to figure out the balanced redox reaction.

Then we make use of the mole ratio to determine the amount of reactants and products left at the end of the reaction.

1. Balance Redox Reaction

Given Fe metal and Fe³⁺ ions react to form Fe²⁺ ions, we can determine that:

- Fe metal is oxidised to Fe²⁺
- Fe³⁺ is reduced to Fe²⁺

Hence we have 2 half equations and we can balance and add them together to get the overall redox reaction.

redox worked example balance redox equation

Check out this video if you are unsure about how to balance redox reactions via the half equation method.

2. Determine Resultant Mixture

Given the options in the question, we can systematically figure out the resultant mixture and see which option has the same amount of Fe³⁺ and Fe²⁺ ions.

The ICE table is an excellect way to figure this out quickly and concisely.

A. 1 mol Fe + 2 mol Fe³⁺

redox worked example option A