Thursday, September 8, 2016

September 08, 2016 Thursday

Bedtime Story

Lavoisier firmly establishes the Law of Conservation of Mass


Lavoisier's young wife turned out to be phenomenally helpful laboratory assistant, spending as much time in the laboratory as her husband.

She would jot down notes, sketch diagrams of the experimental setup and do the translations for his publications as she had complete mastery over English, Latin and French.

She translated and even critiqued works of the great English chemists like Joseph Priestley, Henry Cavendish and many more into French adding her notes whenever she thought something was not right in their work.

With his own inherited wealth and that of his wife Lavoisier constructed a modern au courant chemical laboratory.

The range of experiments that Lavoisier conducted after his duty at Ferm generale is staggering.

Moreover, his meticulous record keeping, accurate recording of the weights of reagents and products, the use of self made glass apparatuses to prevent any gas from escaping made him a pioneer of quantitative chemistry or what we now call stoichiometry.

He did thousands of experiments with various chemicals such as mercury oxide, sulphur, phosphorus, cold, diamond and even with animals.

He was in particular obsessed with combustion, burning all sorts of substances, collecting the gases and accurately weighing them.

All his work accompanied with meticulous record keeping firmly established one of the most important principles of chemistry: The Law of Conservation of Mass.

As he experimented, he kept on publishing. It is a method which has still not percolated deeply in our education system.

Antoine Lavoisier had developed the habit of inviting the top brains of Europe to his place for dinner where they would hold intellectual sessions.

One of the great or possibly the greatest intellectual that he happened to work with was the Frenchman Pierre-Simon Laplace.

They both suspected that animal respiration was a type of combustion.

In the winter of 1782-83, they both devised an instrument called ice calorimeter which could measure the amount of heat given out by a system.

We shall look into this interesting experiment and the device in the nights to come.

Stay tuned to the voice of an average storytelling chimpanzee or login at http://panarrans.blogspot.in/

Good night mon ami and my fellow cousin ape.

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