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Your guide to Intermolecular Forces of Attractions in Chemical Bonding!

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Hello friends

In this video I've showcased notable questions from the RJC and EJC Chemical Bonding Tutorials.

The first qn (EJC Challenging Q1) is a very good real-life application question that you can expect to see tested for your Promo exams.

The rest of the questions are from the RJC tutorial - more fundamental Chem Bonding questions that you must know how to answer.

https://youtu.be/WlnzXrYnc74

Timestamps are in the video description! Do give it a watch :)

Here's the accompanying document!

Hello friends

In this video I've showcased notable questions from the RJC and EJC Gaseous State Tutorials.

Timestamps are in the video description! Do check it out :)

https://youtu.be/c3mh-WwFVFs

Here's are the questions! Answers are at the back

hey guys, check out this balancing redox equation from the 2022 A Levels.

it's abit more interesting, and those from ACJC might have some trouble doing this cus it's in your sch tutorial this year.

but everyone, try it and then view my solutions below

Spoiler alert: Solutions

the dianion is symmetrical. There are 2 Cs bonded to OH, and 2 Cs in CO2-.

we can hence assume that the two types of Cs in this dianion are oxidised to two types of products, HCO2- and CO2

so for the oxidation equation,

C4H4O6 (2-) --> 2HCO2- + 2CO2

the Os are not balanced, so add 2H2O on the left side.

C4H4O6 (2-) + 2H2O --> 2HCO2- + 2CO2

now balance the H with H+, and add electrons.

C4H4O6 (2-) + 2H2O --> 2HCO2- + 2CO2 + 6H+ + 6e-

Spoiler: Full answer

How to remember all 10 enthalpy changes in 1 min!

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