Sunday, August 23, 2009

Revision Chemistry MC Answer 2

The correct formulae for nitric acid is

Nitric implies the a Nitrogen atom involved.
Acid are ionic compounds, where H+ is acting as a metal. The proton gets detached and floats around in solution. Acids are identified if they begin with a H. (exception is Water H20 and Peroxide H202 which arent acids)

a) NH3
This is the formula for ammonia gas, when it dissolves in your nasal mucus it is a strong irritant.

b) H2CO3
This is the formula for Carbolic Acid, it is basically made when CO2 dissolves in water H2O by sticking to water. It is commonly found in coke. It is an acid and the H+ and CO3-- ions separate when put in water , just like a salt, only we call H+ an acid.The H in the front as tells you it is an acid.

c) N2
THis is formula for Nitrogen gas, and makes up 80% of the air we breath.

d) HNO3
This is the formula for nitric acid. The H in the front as tells you it is an acid.

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I come from a Science family: My father Geoffrey Hill was Australia's first computer programmer on CSIRAC the fourth computer in the world. He is credited with invention of Computer music and the development of “Interprogram” a language before Basic. My PhD is in Atomic and Molecular Physics. I have researched the activated oxygen layer above the ozone layer, and 'Assigned' the world's smallest molecule. At the University of Toronto I researched high power UV lasers. I have specialized in automation in fibre optics. This developed into research in Machine Intellect and Robots. I have enjoyed work as an Explainer with Questacon and my time as a part-time soldier. I currently teach High School Science at Epping Boys’ High.