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QUESTION 14 The pH of 0.255 M HCN is 4.95. What is the value of Ka...
Please explain. Answer is 4.90E-10. The pH of 0.255 M HCN is 4.95. What is the...
Please explain. Answer is
4.90E-10.
The pH of 0.255 M HCN is 4.95. What is the value of Ka for hydrocyanic acid, HCN? Enter your answer in exponential (E) format (sample 1.23E-4) without units. Selected Answer: 4.94E-10 Correct Answer: 4.90E-10 Answer range+- 1.0OE-12 (4.890E-10-4.910E-10)
Hydrocyanic acid, HCN is a weak acid with a Ka of 4.9 x 10^-10. What pH...
Hydrocyanic acid, HCN is a weak acid with a Ka of 4.9 x 10^-10. What pH would a 0.50M solution of HCN have? Calculate the Kb value for NaCN using information from the previous question.
the pH of a .042 M solution of a weak acid is 4.95. What is the...
the pH of a .042 M solution of a weak acid is 4.95. What is the value of ka for this acid A. 3.0x10^-9 B. 1.1x10^-5 C. 3.3x10^8 D. 2.7x10^-4 E. 5.8x10^2
1. what is the pH of a .00300 M HCN solution? Ka of HCN is 6.2...
1. what is the pH of a .00300 M HCN solution? Ka of HCN is 6.2 x 10^-10 2. what is the pH of a .100 mL solution containing .50 M NaD and .20 M HF
CHM2046L: General Chemistry and Oualitative Analysis II; Fall 2019 Equilibrium: Determination of Acid Ionization Constant (Ka)...
CHM2046L: General Chemistry and Oualitative Analysis II; Fall 2019 Equilibrium: Determination of Acid Ionization Constant (Ka) of a Weak Acid) (Post-lab # 8: Due Thursday 10-31", 2019) Last name First Name 1. Determine the pH of a 0.023 M HNO3 solution. 2. Calculate the concentration of H30 in a solution that contains 5.5 x 10-5 MOH at 25°C. Identify the solution as acidic, basic, or neutral. 3. Determine the [H30°) in a 0.265 M HCIO solution. The K, of HCIO...
Question 41 of 68 What is the pH of a 0.0710 M solution of hydrocyanic acid,...
Question 41 of 68 What is the pH of a 0.0710 M solution of hydrocyanic acid, HCN (Ka = 4.9 x 10/1)? 1 2 3 7 8 9 +/- x 100
What is the pH of a 0.255 M aqueous solution of sodium hypochlorite, NaClO? (Ka for...
What is the pH of a 0.255 M aqueous solution of sodium hypochlorite, NaClO? (Ka for HClO = 3.5×10-8)
What is the pH of a buffer system that contains 0.190 M hydrocyanic acid (HCN) and...
What is the pH of a buffer system that contains 0.190 M hydrocyanic acid (HCN) and 0.280 M sodium cyanide (NaCN)? The pK_a of hydrocyanic acid is 9.31. Express your answer using two decimal places.
Question 4 of 10 Submit What is the pH of a 0.0560 M solution of hydrocyanic...
Question 4 of 10 Submit What is the pH of a 0.0560 M solution of hydrocyanic acid, HCN (Ka = 4.9 x 10-10)? 1 2 3 +/- 0 x 100 Tap here or pull up for additional resources
Question 6 of 12 Submit What is the pH of a 0.0550 M solution of hydrocyanic...
Question 6 of 12 Submit What is the pH of a 0.0550 M solution of hydrocyanic acid, HCN (Ka = 4.9 x 10-10)? 1 4 7 +/- 2 5 8 : 3 6 9 0 x 10
Please explain. Answer is
4.90E-10.
The pH of 0.255 M HCN is 4.95. What is the value of Ka for hydrocyanic acid, HCN? Enter your answer in exponential (E) format (sample 1.23E-4) without units. Selected Answer: 4.94E-10 Correct Answer: 4.90E-10 Answer range+- 1.0OE-12 (4.890E-10-4.910E-10)
CHM2046L: General Chemistry and Oualitative Analysis II; Fall 2019 Equilibrium: Determination of Acid Ionization Constant (Ka) of a Weak Acid) (Post-lab # 8: Due Thursday 10-31", 2019) Last name First Name 1. Determine the pH of a 0.023 M HNO3 solution. 2. Calculate the concentration of H30 in a solution that contains 5.5 x 10-5 MOH at 25°C. Identify the solution as acidic, basic, or neutral. 3. Determine the [H30°) in a 0.265 M HCIO solution. The K, of HCIO...
Question 41 of 68 What is the pH of a 0.0710 M solution of hydrocyanic acid, HCN (Ka = 4.9 x 10/1)? 1 2 3 7 8 9 +/- x 100
What is the pH of a buffer system that contains 0.190 M hydrocyanic acid (HCN) and 0.280 M sodium cyanide (NaCN)? The pK_a of hydrocyanic acid is 9.31. Express your answer using two decimal places.
Question 4 of 10 Submit What is the pH of a 0.0560 M solution of hydrocyanic acid, HCN (Ka = 4.9 x 10-10)? 1 2 3 +/- 0 x 100 Tap here or pull up for additional resources
Question 6 of 12 Submit What is the pH of a 0.0550 M solution of hydrocyanic acid, HCN (Ka = 4.9 x 10-10)? 1 4 7 +/- 2 5 8 : 3 6 9 0 x 10
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r=9.28
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c2= 6.37 + 1,826.76
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