Question

In: Chemistry

What is the Ka reaction of HCN? The Ka of HCN is 6.2 × 10-10. What...

What is the Ka reaction of HCN?

The Ka of HCN is 6.2 × 10-10. What is Kb value for CN– at 25°C?

Solutions

Expert Solution

Kw= Ka * Kb       

Ka = 6.2 * 10^-10.

Also,

Kw = 10^-14


Kb = Kw / Ka = 10^-14 / 6.2 * 10^-10 = 1.61 * 10^-5


Related Solutions

Consider a solution made by mixing HCN (Ka = 6.2 × 10–10) with HC2H3O2 (Ka =...
Consider a solution made by mixing HCN (Ka = 6.2 × 10–10) with HC2H3O2 (Ka = 1.8 × 10–5) in aqueous solution. What are the major species in solution? H+, CN–, H+, C2H3O2–, OH–, H2O H+, CN–, HC2H3O2, H2O HCN, HC2H3O2, H2O H+, CN–, H+, C2H3O2–, H2O HCN, H+, C2H3O2–, H2O Please explain with your answer.
Cyanic acid (HCN) is a weak acid with a Ka value of 6.2 ✕ 10-10. Calculate...
Cyanic acid (HCN) is a weak acid with a Ka value of 6.2 ✕ 10-10. Calculate the pH of a 1.26 M solution of sodium cyanide - NaCN(aq).
HCN has a pKa = 6.2 x 10-10. If a 50.0 mL of 0.100 M HCN...
HCN has a pKa = 6.2 x 10-10. If a 50.0 mL of 0.100 M HCN is titrated with 0.100 M NaOH, calculate the pH   a) after 8.00 mL base, b) at the halfway point of the titration, c) at the equivalence point. Answers are below, I need to know how to get to them step by step/conceptually Confirm: a) 8.49 , b) 9.21 c) 10.96
Determine the pH of 0.35M HCN. The Ka of HCN is 6.2e-10 M.
Determine the pH of 0.35M HCN. The Ka of HCN is 6.2e-10 M.
Consider the reaction HCN(aq) H+(aq) +CN-(aq). the equilibrium constant is 6.2*10^-10. If you place 0.4 mols...
Consider the reaction HCN(aq) H+(aq) +CN-(aq). the equilibrium constant is 6.2*10^-10. If you place 0.4 mols of HCN in a 2.0 liter flask, what is the equilbrium of CN-? so far ive got to x=x(0.2)(6.2*10^-10)
1. Ka for hydrocyanic acid, HCN, is 4.00×10-10.  Ka for acetylsalicylic acid (aspirin), HC9H7O4, is 3.00×10-4. Ka...
1. Ka for hydrocyanic acid, HCN, is 4.00×10-10.  Ka for acetylsalicylic acid (aspirin), HC9H7O4, is 3.00×10-4. Ka for phenol (a weak acid), C6H5OH, is 1.00×10-10 What is the formula for the strongest acid? 2. Ka for nitrous acid, HNO2, is 4.50×10-4. Ka for hydrocyanic acid, HCN, is 4.00×10-10. Ka for phenol (a weak acid), C6H5OH, is 1.00×10-10. What is the formula for the strongest conjugate base? 3. The compound ammonia , NH3, is a weak base when dissolved in water. Write...
Consider the dissociation of aqueous HCN at 25°C: HCN(aq) --> H+(aq) + CN–(aq) K = 6.2×10–10...
Consider the dissociation of aqueous HCN at 25°C: HCN(aq) --> H+(aq) + CN–(aq) K = 6.2×10–10 . a) Compute ΔG° at 25°C. b) If 0.120 mol of HCN is dissolved to make 200. mL of solution, then what are the equilibrium concentrations of all of the species? c) Suppose 0.040 mol of HCN is dissolved in the same solution without appreciably increasing the volume. Compute the derivative dG/dξ for the system before it has a chance to re-establish equilibrium. Use...
consider the titration of a 20ml sample of .105M HCN with .125M NaOH(ka=4.9*10^-10 of HCN) Draw...
consider the titration of a 20ml sample of .105M HCN with .125M NaOH(ka=4.9*10^-10 of HCN) Draw a scheme of how the titration curve should look like Find: initial pH, pH when 10ml of NaOH were added, pH at the equivalence point, pH when 16.8ml of NaOH were added
A student is given 500.mL of a 0.10M HCN solution. Ka = 4.9 X 10^−10 What...
A student is given 500.mL of a 0.10M HCN solution. Ka = 4.9 X 10^−10 What mass of NaCN should the student dissolve in the HCN solution to turn it into a buffer with pH = 9.86?
what is the ph of a 0.10m solution of nacn at 25°c (ka=4.9×10^-10 for hcn). I've...
what is the ph of a 0.10m solution of nacn at 25°c (ka=4.9×10^-10 for hcn). I've gotten 5.15 as a pH but the correct answer is 11.15. I don't see how it's 11.15...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT