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HA(aq) + H2O(l) A-(aq) + H3O+(aq) What is concentration of dissociated acid molecules (A-) and undissociated acid (HA) in solution of a weak acid at equilibrium if the label concentration is 0.008251 M. The pH of this solution was 2.829 [A-] = M [HA] = M

          HA(aq) + H2O(l)  A-(aq) + H3O+(aq)

What is concentration of dissociated acid molecules (A-) and undissociated acid (HA) in solution of a weak acid at equilibrium if the label concentration is 0.008251 M. The pH of this solution was 2.829

[A-] =	
M
[HA] =	
M
        
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Added by Nimesha F.

Chemistry: Structure and Properties
Chemistry: Structure and Properties
Nivaldo Tro 2nd Edition
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HA(aq) + H2O(l) A-(aq) + H3O+(aq) What is concentration of dissociated acid molecules (A-) and undissociated acid (HA) in solution of a weak acid at equilibrium if the label concentration is 0.008251 M. The pH of this solution was 2.829 [A-] = M [HA] = M
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The acid dissocciation equation for the weak acid (HA) is: HA(aq) + H2O(l) A-(aq) + H3O+(aq) What is concentration of dissociated acid molecules (A-) and undissociated acid (HA) in solution of a weak acid at equilibrium if the label concentration is 0.008251 M. The pH of this solution was 2.829

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Transcript

-
00:01 Alright, so to determine the concentration of dissociated acid molecules and the undissociated acid in solution we can use the equation for the acid as ha which is aqueous in water will give you an equilibrium for the a minus ions dissolved and the hydronium ions.
00:26 Now we are given the ph of the solution, ph is just negative log of the h plus concentration or negative log of the hydronium ion concentration.
00:36 Now ph is given as 2 .829, so we can take antilog to find the concentration of the hydronium ions which will come out to be 0 .001331 molar.
01:06 So this will come out to be the concentration of your hydronium ion...
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