MOL CLASS 19 - Chemical Reactions (class notes S11)

MOL CLASS 19 - Chemical Reactions (class notes S11) -...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
1 NATURAL SCIENCE II: MOLECULES OF LIFE Spring 2011 Class 19 – Wednesday, April 13 Chemical Reactions and Catalysis Reading: Chapter 18 Next class: Chapter 19, pp. 1 – 15 OUTLINE (1) (2) Who are better chemists – humans or bacteria? (3) Getting a reaction started (4) A chemical reaction pathway (5) How do catalysts work? (6) The catalytic converter
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
ANNOUNCEMENTS
Background image of page 2
3 WHO ARE BETTER CHEMISTS? – HUMANS OR BACTERIA Plants need a supply of nitrogen to grow. But they cannot directly utilize the nitrogen gas (N 2 ) in the air. To produce nitrogen fertilizers , it is necessary to “ fix ” the nitrogen in a form the plants can use.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 FIXING NITROGEN BY THE HABER PROCESS Fritz Haber deduced the optimal conditions for reacting N 2 and H 2 to produce NH 3 (ammonia). This process requires extreme conditions: -- a temperature of 400 o C -- a pressure of 200 atmospheres -- a metal catalyst The Haber process is still used worldwide to produce millions of tons of nitrogen fertilizer.
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 16

MOL CLASS 19 - Chemical Reactions (class notes S11) -...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online