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5. The Ka and Molar Mass of a Monoprotic Weak Acid a. Suppose that–unknown to you–the...
5. The Ka and Molar Mass of a Monoprotic Weak Acid a. Suppose that–unknown to you–the primary standard KHP (potassium hydrogen phthalate, KHC8H4O4) had a potassium iodide impurity of approximately one percent by mass. How would this have influenced the calculated molarity of your sodium hydroxide solution? Would your calculated value be too low, too high, or unchanged? Explain your answer. b. Sketch a typical titration curve for a monoprotic weak acid titrated with a strong base. Label the axes...
Need answer ASAP will give thumbs up We dissolve 3.44 g of an unknown acid, HA,...
Need answer ASAP will give thumbs up
We dissolve 3.44 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. We titrate this solution with a 0.250 M solution of NaOH. It takes 18.3 mL of the NaOH solution to reach the equivalence point. The pH at the equivalence point is 12.00. (a) (3 points) What is the molar mass of HA? (b) (3 points) What is the pK, value of HA(aq)? (c) (3 points)...
3. What volume of 0.025 M NaOH will be required to reach the endpoint in a...
3. What volume of 0.025 M NaOH will be required to reach the endpoint in a titration with 25.00 ml of 0.10 M HCI? Show your work with units and correct significant figures. Circle your answer. 4. Calculate the molarity of a sodium hydroxide solution if 25.00 mL 0.100 M maleic acid requires 22.10 ml of NaOH to reach the endpoint. Show your work with units and correct significant figures. Circle your answer. 5. The following data were collected in...
PRE-LAB for pH titration of a Strong Acid with Base This is due before the lab...
PRE-LAB for pH titration of a Strong Acid with Base This is due before the lab begins, Name 1. Calculate the pH of the following solutions: (a) 1 M NaCl Does not dissociate in water to produce either hydrogen or nyot thus it is a neutral Sall, so 7. (b) 1 M HOAc (Ka - 1.8 x 10-5) duce either hydrogen or hyd xde ion, (c) 1 M NHOH (Kb = 1.8 x 10-5) (d) 0.1 M NaOAC (e) 0.1...
If you mix 100.0 mL of 0.125 M HCl (strong acid) with 50.0 mL of 0.175...
If you mix 100.0 mL of 0.125 M HCl (strong acid) with 50.0 mL of 0.175 M NaOH (strong base) what will be the pH of the resulting solution? Have you reached the endpoint of the reaction (circle your answer)? YES NO Explain your answer:
PRE-LAB for plt.titeation.ofa 5tremsAcid.wth Bast This is due before the lab begins 1. Calculate the pH...
PRE-LAB for plt.titeation.ofa 5tremsAcid.wth Bast This is due before the lab begins 1. Calculate the pH of the following solutions (a) 1 M NaC Name (b) I M HOAc (Ka-1.8 x 10-5) (c) I M NH4OH (Kb- 1.8 x 10-5) (d) 0.1 M NaOAc (e) 0.1 M NHCI 2 The pH of a 0.100 M solution of an acid, HA, is 1.70. Calculate the K? (use ICE) 2.Show your work with units and correct significant figures for all questions that...
Buffers are solutions designed to resist changes in pH from the addition of small amounts of acids or bases
Buffers are solutions designed to resist changes in pH from the addition of small amounts of acids or bases. Buffers are comprised of a solution of a weak acid with its conjugate base. When an outside base is added to the buffer, the weak acid in the buffer neutralizes the hydroxide ion of the base, thus retarding its ability to raise the solution's pH. When an outside acid is added to the buffer, the conjugate base of the buffer neutralizes...
For this exercise, you can simulate the described conditions by changing the values in the Run...
For this exercise, you can simulate the described conditions by changing the values in the Run Experiment tool, under the Experiment tab, in the simulation. The temperature changes can be used to qualitatively determine whether an unknown acid is a weak or strong acid by running several neutralization reactions and comparing temperature results from the unknown acids with those of a known strong acid and known weak acid. In the simulation, run four neutralization experiments between 0.120 mol of each...
Help Asap! 1. You are asked to prepare 10.00 mL of a buffer solution consisting of...
Help Asap!
1. You are asked to prepare 10.00 mL of a buffer solution consisting of 0.15 M weak acid (HA) and 0.15 M conjugate base (A™). The target pH of the buffer solution is 4.50. The K of HA is 8.2 x 10-5. What volume of A- is required to make the buffer? You must show your work to receive credit. (3 pts.) Cypka s logo 1. 1 1 . .1
Equivalence Point for Titration #1: 24.96 mL Equivalence Point for Titration #2: 25.40 mL Equivalence Point...
Equivalence Point for Titration #1: 24.96
mL
Equivalence Point for Titration #2: 25.40
mL
Equivalence Point for Titration #3: 25.20
mL
Midpoint pH for Titration #3: 9.80
QUESTIONS:
4) Set up the calculation required to determine
the concentration of the NaOH solution via titration of a given
amount of KHP. Include all numbers except the given mass of
KHP.
5) Set up the calculation required to determine
the concentration of the unknown strong acid via titration with a
known volume...
Need answer ASAP will give thumbs up
We dissolve 3.44 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. We titrate this solution with a 0.250 M solution of NaOH. It takes 18.3 mL of the NaOH solution to reach the equivalence point. The pH at the equivalence point is 12.00. (a) (3 points) What is the molar mass of HA? (b) (3 points) What is the pK, value of HA(aq)? (c) (3 points)...
3. What volume of 0.025 M NaOH will be required to reach the endpoint in a titration with 25.00 ml of 0.10 M HCI? Show your work with units and correct significant figures. Circle your answer. 4. Calculate the molarity of a sodium hydroxide solution if 25.00 mL 0.100 M maleic acid requires 22.10 ml of NaOH to reach the endpoint. Show your work with units and correct significant figures. Circle your answer. 5. The following data were collected in...
PRE-LAB for pH titration of a Strong Acid with Base This is due before the lab begins, Name 1. Calculate the pH of the following solutions: (a) 1 M NaCl Does not dissociate in water to produce either hydrogen or nyot thus it is a neutral Sall, so 7. (b) 1 M HOAc (Ka - 1.8 x 10-5) duce either hydrogen or hyd xde ion, (c) 1 M NHOH (Kb = 1.8 x 10-5) (d) 0.1 M NaOAC (e) 0.1...
PRE-LAB for plt.titeation.ofa 5tremsAcid.wth Bast This is due before the lab begins 1. Calculate the pH of the following solutions (a) 1 M NaC Name (b) I M HOAc (Ka-1.8 x 10-5) (c) I M NH4OH (Kb- 1.8 x 10-5) (d) 0.1 M NaOAc (e) 0.1 M NHCI 2 The pH of a 0.100 M solution of an acid, HA, is 1.70. Calculate the K? (use ICE) 2.Show your work with units and correct significant figures for all questions that...
Help Asap!
1. You are asked to prepare 10.00 mL of a buffer solution consisting of 0.15 M weak acid (HA) and 0.15 M conjugate base (A™). The target pH of the buffer solution is 4.50. The K of HA is 8.2 x 10-5. What volume of A- is required to make the buffer? You must show your work to receive credit. (3 pts.) Cypka s logo 1. 1 1 . .1
Equivalence Point for Titration #1: 24.96
mL
Equivalence Point for Titration #2: 25.40
mL
Equivalence Point for Titration #3: 25.20
mL
Midpoint pH for Titration #3: 9.80
QUESTIONS:
4) Set up the calculation required to determine
the concentration of the NaOH solution via titration of a given
amount of KHP. Include all numbers except the given mass of
KHP.
5) Set up the calculation required to determine
the concentration of the unknown strong acid via titration with a
known volume...
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