El_Zorro (Hive Addict)
12-23-02 23:18
No 392334
      figuring w/vol %?  Bookmark   

How would a bee figure the molar amount of a HCl solution if the given amount is 37% w/vol?  And another thing, does anybody have the density of a 35% formaldehyde solution?

It is seductive, way too seductive.             -Eleusis
 
 
 
 
    Mountain_Girl
(Hive Bee)
12-24-02 00:52
No 392351
      My understanding  Bookmark   

Hmm, 37% w/vol to me implies: 0.37 g HCl/ml of soln

If 0.37 g HCl = 0.37 g/36.46 g/mol = 0.0101 mols HCl

then the molar conc. of the soln is: 0.0101 mols/ml

Mountain Boy
 
 
 
 
    raffike
(Hive Addict)
12-24-02 09:16
No 392459
      Molarity means moles per litre if i remember ...  Bookmark   

Molarity means moles per litre if i remember correct.You can do calculations yourself.

For those about to synth,we salute you
 
 
 
 
    seelite
(Newbee)
12-24-02 17:04
No 392586
      37% w/w formaldehyde in water, d=1.090  Bookmark   

37% w/w formaldehyde in water, d=1.090

Don't drug the mind-let the mind use the drug-it won't mind.