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Example! Effect of Changing Conditions on an Equilibrium - A Graphical Representation

posted Nov 16, 2016, 9:05 AM by Grace Ong   [ updated Dec 17, 2016, 1:17 AM ]

The following post was first posted on Blogger on Thursday, 15 August 2013.

Deriving a concentration-time graph to illustrate the effect of changing reaction conditions on an equilibrium must have been a particular area of concern, considering that both my JC 1 and 2 students are starting to ask me the same question as their promos and prelims draw near.

So I decided to prepare a worked example to complement my Summary Slides on Chemical Equilibria. It explains in greater detail, how the concentration-time graphs found on Slides 29, 32 and 36 were derived.

(To access an expandable version, click here to view slides on Slideshare.)

The Trials and Tribulations of a Chemistry Teacher II

posted Nov 16, 2016, 8:50 AM by Grace Ong   [ updated Nov 22, 2016, 8:56 PM ]

The following post was first posted on Blogger on Saturday, 31 August 2013.

Yesterday, after my Arenes lecture...

Student: Mdm, about that 鸡蛋 (egg)...

Me, puzzled: What 鸡蛋?

Student: That 鸡蛋 lor...

Then it dawned on me as to what he was referring to ...

benzene ring
equal to sign


sunny-side up
I will never look at the benzene ring in the same way again.

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