Homework Answers
If you think 700 M is correct then you can easily substitute
0.700 by 700 then you wont get the answer in given options but will
get a value more than 7 which is not possible in case of acidic
buffer. It should be less than 7 for acidic buffer at 25 degree
Celsius
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Question 10 0.59 pts What is the pH of a buffer made using 45.0 mL of...
If a buffer solution is 0.130 M in a weak acid (K) = 7.2 x 10-5)...
If a buffer solution is 0.130 M in a weak acid (K) = 7.2 x 10-5) and 0.580 M in its conjugate base, what is the pH? pH = A 1.50 L buffer solution consists of 0.328 M propanoic acid and 0.165 M sodium propanoate. Calculate the pH of the solution following the addition of 0.070 mol HCl. Assume that any contribution of the HCl to the volume of the solution is negligible. The K, of propanoic acid is 1.34...
A buffer is made using 48.0 mL of 0.770 M HC3H5O2 (Ka = 1.3 ✕ 10−5)...
A buffer is made using 48.0 mL of 0.770 M HC3H5O2 (Ka = 1.3 ✕ 10−5) and 48.0 mL of 0.690 M NaC3H5O2. What volume of 0.17 M NaOH must be added to change the pH of the original buffer solution by 1.6%? (Do not round intermediate steps.)
You are instrucbed to create 900. mL of a 0.59 M phosphate buffer with a pH...
You are instrucbed to create 900. mL of a 0.59 M phosphate buffer with a pH of 6.4. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. numerical answers to three significant H3PO4(s)H20)H3 aH2PO4(aq) H2PO4-(aq) + H2O(りーH3O + (aq) + HP042-(aq) Ka2-6.2×10-8 HPO()H20()H3)PO43 (aq) Ka 4.8x10-13 Ka 6.9x10-2 Which of the available chemicals will you use for the acid component of your buffer? O H3PO4 O Na2HPO Na3PO4 Which of the available chemicals will you use...
Question 10 (of 15) alue: 00 points 3 attempts left Check work my Enter your answer...
Question 10 (of 15) alue: 00 points 3 attempts left Check work my Enter your answer in the provided box. A buffer solution is prepared in such a way that the concentration of propanoic acid is 1.92 x 10 Mand the concentration of sodium propanoate is 1.51 x 10 M. If the buffer equilibrium is described by C2HCOOH(aq) + H,O) H0 (aq) + C2H2COO (aq) propanoic acid propanoate ion with K, 1.34 x 10, calculate the pH of the solution....
i need help on C This question has multiple parts. Work all the parts to get the most points. buffer consists of 0.9...
i need help on C
This question has multiple parts. Work all the parts to get the most points. buffer consists of 0.96-M propanoic acid (K, -1.4 x 10 ) and 0.88-M sodium propanoate a Calculate the pH of this buffer. pH = 4.81 0 Correct b Calculate the pH after the addition of 2.1 mL of 0.10 M HCl to 0.010 L of the buffer. pH = 4.79 vô Correct C Calculate the pH after the addition of 8.8...
Question a) You have made 100.00 mL of a buffer solution using 82.34 mL of 0.1000...
Question a) You have made 100.00 mL of a buffer solution using 82.34 mL of 0.1000 M acetic acid and 17.66 mL of 0.1000 M sodium acetate. What would be the expected pH of this buffer solution? b) If 0.50 mL of 6.0 M HCl were added to the buffer from the previous question would the pH go up, go down, or stay the same?
What is the pH of a buffer made by combining 181 mL of 0.34 M NaC2H2O2...
What is the pH of a buffer made by combining 181 mL of 0.34 M NaC2H2O2 with 170 mL of 0.28 M HC2H2O2? The K, of acetic acid is 1.75 x 10-5. 4.88 4.64 O 5.93 4.83 O 5.38
A 1.42 L buffer solution consists of 0.322 M propanoic acid and 0.162 M sodium propanoate....
A 1.42 L buffer solution consists of 0.322 M propanoic acid and 0.162 M sodium propanoate. Calculate the pH of the solution following the addition of 0.061 mol HCl. Assume that any contribution of the HCl to the volume of the solution is negligible. The K, of propanoic acid is 1.34 x 10-5. pH=
A 1.32 L buffer solution consists of 0.267 M propanoic acid and 0.129 M sodium propanoate....
A 1.32 L buffer solution consists of 0.267 M propanoic acid and 0.129 M sodium propanoate. Calculate the pH of the solution following the addition of 0.073 mol HCI. Assume that any contribution of the HC) to the volume of the solution is negligible. The K. of propanoic acid is 1.34 x 10-5. pH =
A 1.49 L buffer solution consists of 0.286 M propanoic acid and 0.189 M sodium propanoate....
A 1.49 L buffer solution consists of 0.286 M propanoic acid and 0.189 M sodium propanoate. Calculate the pH of the solution following the addition of 0.066 mol HCL. Assume that any contribution of the HCl to the volume of the solution is negligible. The K, of propanoic acid is 1.34 x 10-5.
If a buffer solution is 0.130 M in a weak acid (K) = 7.2 x 10-5) and 0.580 M in its conjugate base, what is the pH? pH = A 1.50 L buffer solution consists of 0.328 M propanoic acid and 0.165 M sodium propanoate. Calculate the pH of the solution following the addition of 0.070 mol HCl. Assume that any contribution of the HCl to the volume of the solution is negligible. The K, of propanoic acid is 1.34...
You are instrucbed to create 900. mL of a 0.59 M phosphate buffer with a pH of 6.4. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. numerical answers to three significant H3PO4(s)H20)H3 aH2PO4(aq) H2PO4-(aq) + H2O(りーH3O + (aq) + HP042-(aq) Ka2-6.2×10-8 HPO()H20()H3)PO43 (aq) Ka 4.8x10-13 Ka 6.9x10-2 Which of the available chemicals will you use for the acid component of your buffer? O H3PO4 O Na2HPO Na3PO4 Which of the available chemicals will you use...
Question 10 (of 15) alue: 00 points 3 attempts left Check work my Enter your answer in the provided box. A buffer solution is prepared in such a way that the concentration of propanoic acid is 1.92 x 10 Mand the concentration of sodium propanoate is 1.51 x 10 M. If the buffer equilibrium is described by C2HCOOH(aq) + H,O) H0 (aq) + C2H2COO (aq) propanoic acid propanoate ion with K, 1.34 x 10, calculate the pH of the solution....
i need help on C
This question has multiple parts. Work all the parts to get the most points. buffer consists of 0.96-M propanoic acid (K, -1.4 x 10 ) and 0.88-M sodium propanoate a Calculate the pH of this buffer. pH = 4.81 0 Correct b Calculate the pH after the addition of 2.1 mL of 0.10 M HCl to 0.010 L of the buffer. pH = 4.79 vô Correct C Calculate the pH after the addition of 8.8...
What is the pH of a buffer made by combining 181 mL of 0.34 M NaC2H2O2 with 170 mL of 0.28 M HC2H2O2? The K, of acetic acid is 1.75 x 10-5. 4.88 4.64 O 5.93 4.83 O 5.38
A 1.42 L buffer solution consists of 0.322 M propanoic acid and 0.162 M sodium propanoate. Calculate the pH of the solution following the addition of 0.061 mol HCl. Assume that any contribution of the HCl to the volume of the solution is negligible. The K, of propanoic acid is 1.34 x 10-5. pH=
A 1.32 L buffer solution consists of 0.267 M propanoic acid and 0.129 M sodium propanoate. Calculate the pH of the solution following the addition of 0.073 mol HCI. Assume that any contribution of the HC) to the volume of the solution is negligible. The K. of propanoic acid is 1.34 x 10-5. pH =
A 1.49 L buffer solution consists of 0.286 M propanoic acid and 0.189 M sodium propanoate. Calculate the pH of the solution following the addition of 0.066 mol HCL. Assume that any contribution of the HCl to the volume of the solution is negligible. The K, of propanoic acid is 1.34 x 10-5.
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