Author Topic: figuring w/vol %?  (Read 3035 times)

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El_Zorro

  • Guest
figuring w/vol %?
« on: December 23, 2002, 11:18:00 PM »
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

  • Guest
My understanding
« Reply #1 on: December 24, 2002, 12:52:00 AM »
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

  • Guest
Molarity means moles per litre if i remember ...
« Reply #2 on: December 24, 2002, 09:16:00 AM »
Molarity means moles per litre if i remember correct.You can do calculations yourself.

For those about to synth,we salute you

seelite

  • Guest
37% w/w formaldehyde in water, d=1.090
« Reply #3 on: December 24, 2002, 05:04:00 PM »
37% w/w formaldehyde in water, d=1.090

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