Flammable and inflammable gases

• hoay

  10 Dec 14, 02:56

  Hydrogen is a flammable gas which means that it can cathes fire in air. What is an inflammable gas?

• UltimaOnline

  10 Dec 14, 03:28

  Originally posted by hoay:

  Hydrogen is a flammable gas which means that it can cathes fire in air. What is an inflammable gas?

  
  Definition of flammability : http://en.wikipedia.org/wiki/Flammability
  
  Flammable vs. inflammable : http://en.wikipedia.org/wiki/Flammability#Flammable_vs._inflammable
  
  Examples of flammable substances : http://en.wikipedia.org/wiki/Flammability#Examples_of_flammable_substances
  
  Examples of nonflammable liquids / gases : http://en.wikipedia.org/wiki/Flammability#Examples_of_nonflammable_liquids
• hoay

  22 Dec 14, 04:23

  The boiling point of CCl4 is higher than SiCl4. CCl4 has Vander waal forces as well as SiCl4 has but the b.p of SiCl4 is expected to be higher than CCl4 as the former has more spacious electron cloud. Can someone explain. 

• UltimaOnline

  22 Dec 14, 05:23

  Originally posted by hoay:

  The boiling point of CCl4 is higher than SiCl4. CCl4 has Vander waal forces as well as SiCl4 has but the b.p of SiCl4 is expected to be higher than CCl4 as the former has more spacious electron cloud. Can someone explain. 

  
  I actually posted the answer to this question on my BedokFunland JC website several years ago :
  
  Due to the greater magnitude of electronegativity difference between Si and Cl, compared to C and Cl, there is a larger magnitude of partial negative charge on the Cl atoms in SiCl4 molecules (compared to CCl4 molecules), and consequently a greater extent of electrostatic van der Waals repulsions between SiCl4 molecules, and therefore SiCl4 has a lower boiling point, compared to CCl4.
• The Code

  27 Dec 14, 00:03

  钠的性质 : http://v.kongzhong.com/jy/20151105/6492.html