Question 5:
We dissolve 3.07 g of an unknown acid, HA, in enough water to
produce 25.0 mL of solution. The pH of this solution of HA(aq) is
1.45. We titrate this solution with a 0.250 M solution of NaOH. It
takes 44.7 mL of the NaOH solution to reach the equivalence
point.
(a) (2 points) What is the molar mass of HA?
(b) (2 points) What is the pKa value of
HA(aq)?
(c) (2 points) What is the pH at the equivalence
point?
(d) (2 point) What is the pH one third along the titration when you
still have twice as much HA(aq) as A-(aq)?
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Question 5: We dissolve 3.07 g of an unknown acid, HA, in enough water to produce...
We dissolve 2.77 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. The pH of this solution of HA(aq) is 1.33. We titrate this solution with a 0.250 M solution of NaOH. It takes 41.9 mL of the NaOH solution to reach the equivalence point. (a) (2 points) What is the molar mass of HA? (b) (2 points) What is the pKa value of HA(aq)? (c) (2 points) What is the pH at the...
Question 5: We dissolve 2.77 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. The pH of this solution of HA(aq) is 1.33. We titrate this solution with a 0.250 M solution of NaOH. It takes 42.9 mL of the NaOH solution to reach the equivalence point. (a) (2 points) What is the molar mass of HA? (b) (2 points) What is the pKa value of HA(aq)? (c) (2 points) What is the pH...
Question 5: We dissolve 2.77 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. The pH of this solution of HA(aq) is 1.33. We titrate this solution with a 0.250 M solution of NaOH. It takes 44.5 mL of the NaOH solution to reach the equivalence point. (a) (2 points) What is the molar mass of HA? (b) (2 points) What is the pKa value of HA(aq)? (C) (2 points) What is the pH...
Question 5: We dissolve 2.77 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. The pH of this solution of HA(aq) is 1.33. We titrate this solution with a 0.250 M solution of NaOH. It takes 42.2 mL of the NaOH solution to reach the equivalence point. (a) (2 points) What is the molar mass of HA? (b) (2 points) What is the pKa value of HA(aq)? (c) (2 points) What is the pH...
We dissolve 2.77 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. The pH of this solution of HA(aq) is 1.33. We titrate this solution with a 0.250 M solution of NaOH. It takes 44.7 mL of the NaOH solution to reach the equivalence point. 1.What is the pKa value of HA(aq)? 2. What is the pH at the equivalence point? 3.What is the pH one third along the titration when you still have...
We dissolve 2.77 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. The pH of this solution of HA(aq) is 1.33. We titrate this solution with a 0.250 M solution of NaOH. It takes 42.2 mL of the NaOH solution to reach the equivalence point. (a) (2 points) What is the molar mass of HA? (b) (2 points) What is the pKa value of HA(aq)? (c) (2 points) What is the pH at the...
We dissolve 2.77 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. The pH of this solution of HA(aq) is 1.33. We titrate this solution with a 0.250 M solution of NaOH. It takes 42.5 mL of the NaOH solution to reach the equivalence point. (a) (2 points) What is the molar mass of HA? (b) (2 points) What is the pKa value of HA(aq)? (c) (2 points) What is the pH at the...
We dissolve 2.77 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. The pH of this solution of HA(aq) is 1.33. We titrate this solution with a 0.250 M solution of NaOH. It takes 42.0 mL of the NaOH solution to reach the equivalence point. (a) (2 points) What is the molar mass of HA? (b) (2 points) What is the pKa value of HA(aq)? (c) (2 points) What is the pH at the...
We dissolve 2.77 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. The pH of this solution of HA(aq) is 1.33. We titrate this solution with a 0.250 M solution of NaOH. It takes 40.9 mL of the NaOH solution to reach the equivalence point. (a) (2 points) What is the molar mass of HA? (b) (2 points) What is the pKa value of HA(aq)? (c) (2 points) What is the pH at the...
We dissolve 2.77 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. The pH of this solution of HA(aq) is 1.33. We titrate this solution with a 0.250 M solution of NaOH. It takes 42.5 mL of the NaOH solution to reach the equivalence point. (a) (2 points) What is the molar mass of HA? (b) (2 points) What is the pKa value of HA(aq)? (c) (2 points) What is the pH at the...