IIT JEE: Molecular Orbital Theory Matrix Match 2009

Polar Area Q & A

Q: What is the concept of directed distance in polar area discussion in the topic on, "Area Under the Curves"?

A: Click here to download the video (.wmv file) explaining this.

Methyl Isocyanate

CH3NCO is a very toxic organic isocyanate and its inhalation may lead to rapid death.

So, how can one destroy it in lab?

Isocyanates are destroyed by contact with water, mineral bases or methanol. But, the reaction is exothermic.

Was the above mentioned line in italics responsible for claiming so many lives in Bhopal and affecting many more for generations?

Was the method of destruction of the gas became the reason of propagation of the gas and the method of destruction of so many lives?

Perhaps!

Here is a good write-up on this. The third paragraph must be of special interest to any science student/enthusiast.

Hydrogen Deuterium Q & A

Q: In Organic Chemistry problems involving H and D, why is C-H bond broken more readily in comparison to C-D bond?

A: The bond dissociation energy of C-H bond is slightly lower than the bond dissociation energy of the C-D bond. This has to do with smaller mass of H atom allowing faster vibrations making H somewhat loosely bound to C.

Conditional Probability