Homework Answers
![1) Nitrous acid (HNO2) is a weak acid and KNO2 is salt of conjugate base. [NO2-) = 0.271M ...conjugate base [HNO2] = 8.24*10^](http://img.homeworklib.com/questions/13a3d780-d41c-11eb-8dc9-539490c09e2f.png?x-oss-process=image/resize,w_560)
pKa of nitrous acid is not given hence I am taking it from the book by Atkins, "Physical chemistry".
Also the volume of solution is not given hence other method to calculate pH using ICE table is not useful.
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A solution contains 0.271 M potassium nitrite and 8.24x10-2 M nitrous acid. The pH of this...
A solution contains 0.440 M potassium nitrite and 0.102 M nitrous acid. The pH of this...
A solution contains 0.440 M potassium nitrite and 0.102 M nitrous acid. The pH of this solution is .
A solution contains 0.403 M potassium nitrite and 0.373 M nitrous acid. The pH of this...
A solution contains 0.403 M potassium nitrite and 0.373 M nitrous acid. The pH of this solution is Submit Answer Retry Entire Group 9 more group attempts remaining
A 1 liter solution contains 0.288 M nitrous acid and 0.384 M potassium nitrite. Addition of...
A 1 liter solution contains 0.288 M nitrous acid and 0.384 M potassium nitrite. Addition of 0.317 moles of sodium hydroxide will: (Assume that the volume does not change upon the addition of sodium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity A 1 liter solution contains 0.554 M hypochlorous acid and 0.416 M potassium hypochlorite. Addition of 0.457...
A 1.00 liter solution contains 0.54 moles nitrous acid and 0.42 moles potassium nitrite . If...
A 1.00 liter solution contains 0.54 moles nitrous acid and 0.42 moles potassium nitrite . If 0.21 moles of perchloric acid are added to this system, indicate whether the following statements are true or false. (Assume that the volume does not change upon the addition of perchloric acid.) A. The number of moles of HNO2 will remain the same. B. The number of moles of NO2 will increase. C. The equilibrium concentration of Hz0+ will increase. D. The pH will...
A 1.00 liter solution contains 0.40 moles nitrous acid and 0.31 moles potassium nitrite. If 0.15...
A 1.00 liter solution contains 0.40 moles nitrous acid and 0.31 moles potassium nitrite. If 0.15 moles of hydrobromic acid are added to this system, indicate whether the following statements are true or false. (Assume that the volume does not change upon the addition of hydrobromic acid.) DA. The number of moles of HNO, will increase. B. The number of moles of NO, will increase C. The equilibrium concentration of H,0" will increase D. The pH will decrease. E. The...
3 Questions: 1)What is the pH of A solution containing 0.483 M potassium nitrite and 5.38E-2...
3 Questions: 1)What is the pH of A solution containing 0.483 M potassium nitrite and 5.38E-2 M nitrous acid. 2)In the laboratory, a general chemistry student measured the pH of a 0.589 M aqueous solution of hypochlorous acid to be 3.861. Use the information she obtained to determine the Ka for this acid. 3)What is the pH of an aqueous solution of 0.421 M morphine
How many grams of solid sodium nitrite should be added to 2.00 L of a 0.271...
How many grams of solid sodium nitrite should be added to 2.00 L of a 0.271 M nitrous acid solution to prepare a buffer with a pH of 2.614? grams sodium nitrite =
A 1 liter solution contains 0.230 M nitrous acid and 0.306 M sodium nitrite. Addition of...
A 1 liter solution contains 0.230 M nitrous acid and 0.306 M sodium nitrite. Addition of 0.057 moles of barium hydroxide will: (Assume that the volume does not change upon the addition of barium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity
What is the pH of a 0.15 M solution of potassium nitrite (KNO2)? (K, value for...
What is the pH of a 0.15 M solution of potassium nitrite (KNO2)? (K, value for HNO2 nitrous acid - 4.0 x 10-4) a. 11.43 d.5.71 b. 7.00 e. 11.89 c. 8.29 - -
A solution of nitrous acid and potassium nitrite acts as a buffer due to reactions that...
A solution of nitrous acid and potassium nitrite acts as a
buffer due to reactions that occur within the solution when a
strong acid or a strong base is added.
Write the net ionic equation for the reaction that occurs in
this buffer to react away any added HCl (aq).
Write the net ionic equation for the reaction that occurs in
this buffer to react away any added NaOH (aq).
3. A solution of nitrous acid and potassium nitrite acts...
A solution contains 0.403 M potassium nitrite and 0.373 M nitrous acid. The pH of this solution is Submit Answer Retry Entire Group 9 more group attempts remaining
A 1 liter solution contains 0.288 M nitrous acid and 0.384 M potassium nitrite. Addition of 0.317 moles of sodium hydroxide will: (Assume that the volume does not change upon the addition of sodium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity A 1 liter solution contains 0.554 M hypochlorous acid and 0.416 M potassium hypochlorite. Addition of 0.457...
A 1.00 liter solution contains 0.54 moles nitrous acid and 0.42 moles potassium nitrite . If 0.21 moles of perchloric acid are added to this system, indicate whether the following statements are true or false. (Assume that the volume does not change upon the addition of perchloric acid.) A. The number of moles of HNO2 will remain the same. B. The number of moles of NO2 will increase. C. The equilibrium concentration of Hz0+ will increase. D. The pH will...
A 1.00 liter solution contains 0.40 moles nitrous acid and 0.31 moles potassium nitrite. If 0.15 moles of hydrobromic acid are added to this system, indicate whether the following statements are true or false. (Assume that the volume does not change upon the addition of hydrobromic acid.) DA. The number of moles of HNO, will increase. B. The number of moles of NO, will increase C. The equilibrium concentration of H,0" will increase D. The pH will decrease. E. The...
How many grams of solid sodium nitrite should be added to 2.00 L of a 0.271 M nitrous acid solution to prepare a buffer with a pH of 2.614? grams sodium nitrite =
A 1 liter solution contains 0.230 M nitrous acid and 0.306 M sodium nitrite. Addition of 0.057 moles of barium hydroxide will: (Assume that the volume does not change upon the addition of barium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity
What is the pH of a 0.15 M solution of potassium nitrite (KNO2)? (K, value for HNO2 nitrous acid - 4.0 x 10-4) a. 11.43 d.5.71 b. 7.00 e. 11.89 c. 8.29 - -
A solution of nitrous acid and potassium nitrite acts as a
buffer due to reactions that occur within the solution when a
strong acid or a strong base is added.
Write the net ionic equation for the reaction that occurs in
this buffer to react away any added HCl (aq).
Write the net ionic equation for the reaction that occurs in
this buffer to react away any added NaOH (aq).
3. A solution of nitrous acid and potassium nitrite acts...
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