Strong base is dissolved in 665 mL of 0.200 M weak acid (K₁ = 4.73 x 10-5) to make a buffer with a pH of 4.10. Assume that the volume remains constant when the base is added. HA(aq) + OH(aq) → H₂O(1) + A (aq) Calculate the pK value of the acid, and determine the number of moles of acid initially present. PK₁ = initial amount: When the reaction is complete, what is the concentration ratio of conjugate base to acid? [A] = [HA] How many moles of strong base were initially added? amount added: mol HA mol OH™

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Strong base is dissolved in 665 mL of 0.200 M weak acid (K₁ = 4.73 x 10-5) to make a buffer with a pH of 4.10. Assume that
the volume remains constant when the base is added.
HA(aq) + OH(aq) → H₂O(1) + A (aq)
Calculate the pk₁ value of the acid, and determine the number of moles of acid initially present.
PK₁ =
initial amount:
When the reaction is complete, what is the concentration ratio of conjugate base to acid?
[A] =
[HA]
How many moles of strong base were initially added?
amount added:
mol HA
mol OH™
Transcribed Image Text:Strong base is dissolved in 665 mL of 0.200 M weak acid (K₁ = 4.73 x 10-5) to make a buffer with a pH of 4.10. Assume that the volume remains constant when the base is added. HA(aq) + OH(aq) → H₂O(1) + A (aq) Calculate the pk₁ value of the acid, and determine the number of moles of acid initially present. PK₁ = initial amount: When the reaction is complete, what is the concentration ratio of conjugate base to acid? [A] = [HA] How many moles of strong base were initially added? amount added: mol HA mol OH™
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