Ch.15 - Acid and Base EquilibriumSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Hydrogen cyanate (HOCN, K a = 3.3 x 10 -4) is a distant cousin of the more (in)famous compound, hydrogen cyanide (HCN, K a = 4.0 x 10 -10), but it still manages to eke out a comfortable living as a weak acid in chemistry text books. A. Which is more basic: OCN - or CN - ?explain your reasoning.   B. Determine Kc for the reaction HCN + OCN - ⇌ CN - + HOCN

Problem

Hydrogen cyanate (HOCN, K a = 3.3 x 10 -4) is a distant cousin of the more (in)famous compound, hydrogen cyanide (HCN, K a = 4.0 x 10 -10), but it still manages to eke out a comfortable living as a weak acid in chemistry text books.

A. Which is more basic: OCN - or CN ?explain your reasoning.

 

B. Determine Kc for the reaction

HCN + OCN - ⇌ CN - + HOCN