Friday, 2 September 2011





H2O + H2OSO4


H2SO4 => SO4

H2OSO4 = H

Chemistry – A-level/undergraduate level

This is a frustratingly inconsistent approach to writing chemical formulae. On the one hand the teacher has gone to the trouble of also using structural formulae to improve clarity (eg H2N2O2 could be nitramide, but the addition of HO-N=N-OH makes it clear that we are dealing with hyponitrous acid here), but then writes SI (sulphur iodine) instead of Si (silicon) in the formula for orthosilicic acid. This, combined with not using subscripts for many of the numbers, could lead to a great deal of confusion.

Whilst this lesson appears to be aimed at quite a high level, such elementary errors may affect comprehension.

5/10 - rather sloppy.


  1. This is the single most brilliant blog I have ever seen!

  2. How come there's no brazzers equation =P here's 1 .

  3. This comment has been removed by a blog administrator.

  4. HEHEHEHE. just found this site. lol awesomes dude.

  5. Well, I think that, in this particular case, SILICON is far more adequate than sulphur iodine.

  6. Joaquín - 5/10. I think you mean silicone (not to be confused with silicon).

  7. Do you like Asian pornstars? I quess "yes". Visit my blog black on asian free adult pages and read the article Mia Khalifa real name.You also may like livesex chat with online cam girls. Thank you so much for reading my comment!