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W Question 1 What is the pH of a...
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 - -
Top question. P1. (Sec. 16.2) What is the pH of a solution prepared by adding 0.45...
Top question.
P1. (Sec. 16.2) What is the pH of a solution prepared by adding 0.45 moles of formic acid HCO2H, and 0.40 moles of sodium formate, NaCO,H, in enough water to make a 1.0-liter solution? (Formic Acid: K 1.81 10-) a) 4.32 b) 3.69 c) 5.52 d) 7.32 e) 9.11 P2. (Sec. 16.2) What is the pH of a solution prepared by adding 100 mL of a 0.25 M solution of sodium acetate, NaC2H,O2, into 110 mL of 0.30...
please solve and show work! A 25.0 mL sample of 0.200 M nitrous acid is titrated...
please solve and show work!
A 25.0 mL sample of 0.200 M nitrous acid is titrated with a 0.200 M NaOH solution. What is the pOH at the equivalence point? The Ka of nitrous acid is 4.6 x 10-4 O A 8.11 O B.3.35 O c.5.85 OD. 10.65 E. 7.00
Calculating the composition of a buffer of a given pH . What mass of A chemistry graduate student is given 100 mL of...
Calculating the composition of a buffer of a given pH . What mass of A chemistry graduate student is given 100 mL of a 0.40 M nitrous acid (HNO) solution. Nitrous acid is a weak acid with K =4.5 10 KNO, should the student dissolve in the HNO, solution to turn it into a buffer with pH = 3.46? You may assume that the volume of the solution doesn't change when the KNO, is dissolved in it. Be sure your...
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
help please asap please Question 36 (1 point) What is the pH of a buffer made...
help please asap please
Question 36 (1 point) What is the pH of a buffer made by combining 0.114 M nitrous acid and 0.204 M sodium nitrite? The Ka of nitrous acid, HNO2, is 4.5*10-4 Your Answer: Answer Question 35 (1 point) Which salt produces a basic solution when dissolved in water? FeCl3 NaNO2 NH4Br KCI Question 34 (1 point) Between HCIO3 and HIO3, which is stronger and why? OHCIO3 is stronger because chlorine is more electronegative than iodine. HCIO3...
Calculate the hydroxide ion concentration and the POH in an aqueous solution with a pH =...
Calculate the hydroxide ion concentration and the POH in an aqueous solution with a pH = 2.3 at 25°C. a. [OH 1 - 2.0 * 10-12M : POH - 2.30 b. [OH 7 -2.0 * 10-11M: POH = 11.70 C[OH 7 -5.0 x 10-3 M : POH = 11.70 d. [OH ) - 2.0 x 10-12 M : POH = 11.70 e.[OH ) - 2.0*10-12M : POH -8.50 Which of the following solutions is a good buffer system? a. A...
1. What is the pOH of an aqueous solution of 0.171 M hydrobromic acid? pOH =...
1. What is the pOH of an aqueous solution of 0.171 M hydrobromic acid? pOH = 2. What is the pH of an aqueous solution of 1.77×10-2 M nitric acid? pH = 3. What is the pOH of an aqueous solution of 3.08×10-2 M potassium hydroxide? pOH = 4. What is the pH of an aqueous solution of 3.08×10-2 M potassium hydroxide? pH = 5. Calculate the pH of a 0.409 M aqueous solution of nitrous acid (HNO2, Ka =...
1. Calculate pH and % ionization of 0.25 M Naco (Ka (HCO2H) 1.8 x 10") 2-...
1. Calculate pH and % ionization of 0.25 M Naco (Ka (HCO2H) 1.8 x 10") 2- Calculate the pH of: a) 0.35 M HNO b) 0.15 M Sr(O)2 c) 0.08 M Ba(CIO4)2 3- Calculate the pH of 0.375 L buffer solution made of a 0.18 M Acetic acid HC2H:02(Ka 1.8x 10) and a 0.134 M Potassium acetate KC2Hs02 (do not use more than 3 digits beyond the decimal point) a) before adding anything b) after adding 0.010 mol Ba(OH)2 c)...
Question (1 point) 2nd attempt Feedback It See Periodic Table O See Hint In a 8.00...
Question (1 point) 2nd attempt Feedback It See Periodic Table O See Hint In a 8.00 M nitrous acid (HNO,) solution, calculate (H). Nitrous acid is a weak acid with K - 4,00 x 104 at 25°C. 1.789 x 10- M > 1st attempt
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 - -
Top question.
P1. (Sec. 16.2) What is the pH of a solution prepared by adding 0.45 moles of formic acid HCO2H, and 0.40 moles of sodium formate, NaCO,H, in enough water to make a 1.0-liter solution? (Formic Acid: K 1.81 10-) a) 4.32 b) 3.69 c) 5.52 d) 7.32 e) 9.11 P2. (Sec. 16.2) What is the pH of a solution prepared by adding 100 mL of a 0.25 M solution of sodium acetate, NaC2H,O2, into 110 mL of 0.30...
please solve and show work!
A 25.0 mL sample of 0.200 M nitrous acid is titrated with a 0.200 M NaOH solution. What is the pOH at the equivalence point? The Ka of nitrous acid is 4.6 x 10-4 O A 8.11 O B.3.35 O c.5.85 OD. 10.65 E. 7.00
Calculating the composition of a buffer of a given pH . What mass of A chemistry graduate student is given 100 mL of a 0.40 M nitrous acid (HNO) solution. Nitrous acid is a weak acid with K =4.5 10 KNO, should the student dissolve in the HNO, solution to turn it into a buffer with pH = 3.46? You may assume that the volume of the solution doesn't change when the KNO, is dissolved in it. Be sure your...
help please asap please
Question 36 (1 point) What is the pH of a buffer made by combining 0.114 M nitrous acid and 0.204 M sodium nitrite? The Ka of nitrous acid, HNO2, is 4.5*10-4 Your Answer: Answer Question 35 (1 point) Which salt produces a basic solution when dissolved in water? FeCl3 NaNO2 NH4Br KCI Question 34 (1 point) Between HCIO3 and HIO3, which is stronger and why? OHCIO3 is stronger because chlorine is more electronegative than iodine. HCIO3...
Calculate the hydroxide ion concentration and the POH in an aqueous solution with a pH = 2.3 at 25°C. a. [OH 1 - 2.0 * 10-12M : POH - 2.30 b. [OH 7 -2.0 * 10-11M: POH = 11.70 C[OH 7 -5.0 x 10-3 M : POH = 11.70 d. [OH ) - 2.0 x 10-12 M : POH = 11.70 e.[OH ) - 2.0*10-12M : POH -8.50 Which of the following solutions is a good buffer system? a. A...
1. Calculate pH and % ionization of 0.25 M Naco (Ka (HCO2H) 1.8 x 10") 2- Calculate the pH of: a) 0.35 M HNO b) 0.15 M Sr(O)2 c) 0.08 M Ba(CIO4)2 3- Calculate the pH of 0.375 L buffer solution made of a 0.18 M Acetic acid HC2H:02(Ka 1.8x 10) and a 0.134 M Potassium acetate KC2Hs02 (do not use more than 3 digits beyond the decimal point) a) before adding anything b) after adding 0.010 mol Ba(OH)2 c)...
Question (1 point) 2nd attempt Feedback It See Periodic Table O See Hint In a 8.00 M nitrous acid (HNO,) solution, calculate (H). Nitrous acid is a weak acid with K - 4,00 x 104 at 25°C. 1.789 x 10- M > 1st attempt
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