2. Consider the reaction of cyanide ion (CN) with water, where cyanide ion is either a weak acid or a weak base. a) Select the correct chemical equation for the acid/base dissociation reaction of cyanide ion in water: OCN- (aq) + H₂O (/) HCN (aq) + H3O+ (aq) OCN- (aq) + H₂O (/) = H₂CN+ (aq) + OH¯ (aq) OCN- (aq) + H₂O (/) = H₂CN+ (aq) + H3O+ (aq) OCN- (aq) + H₂O (/) HCN (aq) + OH- (aq) Incorrect. Tries 3/3 Previous Tries b) The equilibrium expression for this reaction corresponds to: Incorrect Ka Correct: Kb You are correct. Previous Tries Your receipt no. is 152-2641 c) The numerator of the equilibrium expression (from part b) for this reaction is: [HCN ] O[ H₂CN+ ][ OH-] O[OH ][ HCN ] [H₂CN+ ] O[ HCN ][ H3O+] O[H3O+] O[H₂CN+ ][ H3O+] O[OH ][ CN¯ ]
2. Consider the reaction of cyanide ion (CN) with water, where cyanide ion is either a weak acid or a weak base. a) Select the correct chemical equation for the acid/base dissociation reaction of cyanide ion in water: OCN- (aq) + H₂O (/) HCN (aq) + H3O+ (aq) OCN- (aq) + H₂O (/) = H₂CN+ (aq) + OH¯ (aq) OCN- (aq) + H₂O (/) = H₂CN+ (aq) + H3O+ (aq) OCN- (aq) + H₂O (/) HCN (aq) + OH- (aq) Incorrect. Tries 3/3 Previous Tries b) The equilibrium expression for this reaction corresponds to: Incorrect Ka Correct: Kb You are correct. Previous Tries Your receipt no. is 152-2641 c) The numerator of the equilibrium expression (from part b) for this reaction is: [HCN ] O[ H₂CN+ ][ OH-] O[OH ][ HCN ] [H₂CN+ ] O[ HCN ][ H3O+] O[H3O+] O[H₂CN+ ][ H3O+] O[OH ][ CN¯ ]
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter15: Solutions Of Acids And Bases
Section: Chapter Questions
Problem 15.122QE: A Liquid HF undergoes an autoionization reaction: 2HFH2F++F (a) Is KF an acid or a base in this...
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Question
![2. Consider the reaction of cyanide ion (CN) with water, where cyanide ion is either a weak acid or a weak base.
a) Select the correct chemical equation for the acid/base dissociation reaction of cyanide ion in water:
OCN- (aq) + H₂O (/) HCN (aq) + H3O+ (aq)
OCN- (aq) + H₂O (/) = H₂CN+ (aq) + OH¯ (aq)
OCN- (aq) + H₂O (/) = H₂CN+ (aq) + H3O+ (aq)
OCN- (aq) + H₂O (/) HCN (aq) + OH- (aq)
Incorrect. Tries 3/3 Previous Tries
b) The equilibrium expression for this reaction corresponds to:
Incorrect Ka
Correct: Kb
You are correct.
Previous Tries
Your receipt no. is 152-2641
c) The numerator of the equilibrium expression (from part b) for this reaction is:
[HCN ]
O[ H₂CN+ ][ OH-]
O[OH ][ HCN ]
[H₂CN+ ]
O[ HCN ][ H3O+]
O[H3O+]
O[H₂CN+ ][ H3O+]
O[OH ][ CN¯ ]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff914bbe4-37c7-4c2b-92ac-6fab10758af0%2F0a9fbbf7-c05e-4fc3-93f8-7f62b35bab55%2Funw0tee_processed.png&w=3840&q=75)
Transcribed Image Text:2. Consider the reaction of cyanide ion (CN) with water, where cyanide ion is either a weak acid or a weak base.
a) Select the correct chemical equation for the acid/base dissociation reaction of cyanide ion in water:
OCN- (aq) + H₂O (/) HCN (aq) + H3O+ (aq)
OCN- (aq) + H₂O (/) = H₂CN+ (aq) + OH¯ (aq)
OCN- (aq) + H₂O (/) = H₂CN+ (aq) + H3O+ (aq)
OCN- (aq) + H₂O (/) HCN (aq) + OH- (aq)
Incorrect. Tries 3/3 Previous Tries
b) The equilibrium expression for this reaction corresponds to:
Incorrect Ka
Correct: Kb
You are correct.
Previous Tries
Your receipt no. is 152-2641
c) The numerator of the equilibrium expression (from part b) for this reaction is:
[HCN ]
O[ H₂CN+ ][ OH-]
O[OH ][ HCN ]
[H₂CN+ ]
O[ HCN ][ H3O+]
O[H3O+]
O[H₂CN+ ][ H3O+]
O[OH ][ CN¯ ]
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