**Equilibrium Concentration of CN⁻ Ion in Mixed Solutions**What is the equilibrium concentration of CN⁻ ion after mixing the following solutions? *(Hint: Mixing the solutions dilutes the reactants.)***(a)** Mixing 50.0 mL of 0.100 M HCN with 50.0 mL of 0.100 M NH₃?The chemical equation is:\[ \text{NH}_3(aq) + \text{HCN}(aq) \rightleftharpoons \text{NH}_4^+(aq) + \text{CN}^-(aq) \]The equilibrium constant, \( K_c \), is 0.71.- Correct Answer: \[ \boxed{4.0 \times 10^{-3} \text{ M}} \]---**(b)** Mixing 50.0 mL of 0.100 M HCN with 50.0 mL of 0.100 M K₂S?The chemical equation is:\[ \text{S}^{2-}(aq) + \text{HCN}(aq) \rightleftharpoons \text{HS}^-(aq) + \text{CN}^-(aq) \]The equilibrium constant, \( K_c \), is \( 3.1 \times 10^3 \).- Incorrect Answer Provided: \[ 5.0 \times 10^{2} \text{ M} \]---**(c)** Mixing 50.0 mL of 0.100 M HCN with 50.0 mL of 0.100 M KF?The chemical equation is:\[ \text{F}^-(aq) + \text{HCN}(aq) \rightleftharpoons \text{HF}(aq) + \text{CN}^-(aq) \]The equilibrium constant, \( K_c \), is \( 5.6 \times 10^{-7} \).- Correct Answer: \[ \boxed{3.7 \times 10^{-5} \text{ M}} \]

Answered: Image /qna-images/answer/fa18c124-93b3-4314-a97f-4afdf1770db8.jpg

(a) mixing 50.0 mL of 0.100 M HCN with 50.0 mL of 0.100 M NH3? NH3(aq) + HCN(aq) ⇒ NH4+ (aq) + CN ¯(aq) Kc = 0.71 M 4.0 (b) mixing 50.0 mL of 0.100 M HCN with 50.0 mL of 0.100 M K₂S? S² (aq) + HCN(aq) = HS¯(aq) + CN −(aq) Kc = 3.1 x 10³ 5.0e2 XM 4.0

(a) mixing 50.0 mL of 0.100 M HCN with 50.0 mL of 0.100 M NH3? NH3(aq) + HCN(aq) ⇒ NH4+ (aq) + CN ¯(aq) Kc = 0.71 M 4.0 (b) mixing 50.0 mL of 0.100 M HCN with 50.0 mL of 0.100 M K₂S? S² (aq) + HCN(aq) = HS¯(aq) + CN −(aq) Kc = 3.1 x 10³ 5.0e2 XM 4.0

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

can you please answer the chem questions on the image attached below? i have included another picture for the choices available for first one thank you so very much
7.7 g of citric acid (MM = 192.1 g/mol) can be titrated with NaOH according to the following balanced chemical equation. H3C6H5O7 (aq) + NaOH(aq) → H2O(l) + Na H2C6H5O7(aq) what would the curve for the titration of the neutralization of the three hydrogens of this acid with NaOH look like?
How do I solve this?
This is another titration question. When 35.00 ml of phosphoric acid of unknown concentration is titrated with 1.025 M NaOH, and 18.75 ml of NaOH is required to reach the endpoint, what is the molarity of the phosphoric acid? The reaction is: H3PO4 (aq) + 3 NaOH (aq) → Na3PO4 (aq) + 3 H2O (l)
The hydronium ion concentration of an aqueous solution of 0.591 M aniline (a weak base with the formula C,H5NH,) is ... [H;O*] = М.
After we add some solid (NH3)4PO4 into a 100mL 0.240 M (NH4)2CO3 solution, the molarity of NH4+ in the mixture is 0.840 M. What is the molarity of PO4+?
This is 1 question.
7. The separate samples of nitric and acetic acids are both titrated with a 0.100 M solution of NaOH(aq). (Y) 25.0mL of 1.0 M HNO3(aq) (Z) 25.0 mL of 1.0 M CH3COOH(aq) Determine whether each of the following statements concerning this titration is true or false. (A) A larger volume of NaOH(aq) is needed to reach the equivalence point in the titration of HNO3 (B) The pH at the equivalence point in the HNO3 titration will be lower than the pH at the equivalence point in the CH3COOH titration (C) Phenolphthalein would be a suitable indicator for both titrations Group of answer choices a.) A) False B) True C) True b.) A) False B) False C) True c.) A) False B) True C) False d.) A) True B)True C)True
What volume, mL, of a 0.121M NaOH solution is required to reach the endpoint in a complete titration of a 10.0 mL sample of 0.102 M H2SO4? H2SO4 (aq) + NaOH (aq) → H2O (l) + Na2SO4 (aq)
if 25.0g of NaOH is added to 0.750L of 1.00M Cd(NO3)2 how many grams of Cd(OH)2 will be fromed in the following precipitation reaction? 2 NaOH9aq)+ Cd(NO3)(aq)= Cd(OH)2(s)+ 2NaNO3(aq)
41 5.00 mL of 3.00 M sodium hydroxide, NaOH, is added to 100.0 mL of an acetate buffer solution with the following concentrations: [CH3COOH] = 0.6012 M [CH3COO-] = 0.6069 M After the addition of the strong base, what is the concentration of the conjugate base in the resulting solution? 0.757 M 0.715 M 0.721 M 0.632 M 0.435 M
What weight of potassium hydrogen phthalate will require 30. mL of a 0.30M NaOH solution to reach the equivalence point? KHP MM 204.22 g/mol .CO;K' .CO;K' NaOH + H2O + *CO,H COƠ,Na'