CHEM 11b Lecture Notes - Lecture 13: Dynamic Equilibrium, Thermodynamics, Solubility Equilibrium

43 views4 pages

viridiancrow586

9 Mar 2017

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Freezing point: the temperature at which the rate of freezing of a liquid equals the rate of melting of a solid. Vapor pressure: the pressure of the vapor above a liquid when the rate of vaporization equals the rate of condensation. Solubility equilibrium: in a saturated solution, a state in which the rate of dissolution of a solid is equal to the rate of crystallization of the solid out of the solution. Rate of crystallization = rate of dissolution. When there is product the reverse reaction increases from zero as the reaction forward slows until they are in equlibrium. Product favored reactions, there is more product than reactants in equilibrium. Some reactions are reactant favored so there is more reactants than product in equilibrium. Equilibrium constants do not include the concentration of the solids. Really small k means that most is the reactant and little is the product. Large k means that most has become product and smaller reactants.

Related Questions

Select all of the correct statements about equilibrium from the choices below.

(a) At equilibrium the rates of forward and reverse reactions are equal.

(b) At equilibrium the forward rate constant equals zero.

(c) As a reaction proceeds forward toward equilibrium the product concentrations rise.

(d) At equilibrium the rate of change of reactant concentration is zero.

(e) At equilibrium there are always equal amounts of reactants and products.

(f) As a reaction proceeds forward toward equilibrium the forward rate constant drops.

4. Consider the following: 2NH_3(g) â N_2(g)+ 3H_2(g)

A flask is initially filled with NH₃. As the system approaches equilibrium, the rate of the forward reaction

A. Increases as the rate of the reverse reaction decreases

B. Decreases as the rate of the reverse reaction increases

C. Increases as the rate of the reverse reaction increases

D. Decreases as the rate of the reverse reaction decreases

5. A system at equilibrium is said to be dynamic because at equilibrium the

A. Temperature does not change

B. Macroscopic properties are constant

C. Forward and reverse reactions continue to occur

D. Concentrations of reactants and products are constant

6. In all systems at equilibrium, the

A. Concentration of reactants is less than the concentration of products

B. Concentration of reactants and the concentration of products are equal

C. Concentration of reactants is greater than the concentration of products

D. Concentration of reactants and the concentration of products are constant

CHEM 11b Lecture Notes - Lecture 13: Dynamic Equilibrium, Thermodynamics, Solubility Equilibrium

Document Summary

Get access

Related textbook solutions

Chemistry: Structure and Properties

Basic Chemistry

Principles of Chemistry Molecular Approach

Chemistry: Structure and Properties

Principles of Chemistry Molecular Approach

Chemistry: A Molecular Approach

Chemistry: A Molecular Approach

Principles of Chemistry: A Molecular Approach

Chemistry: The Central Science

Related Documents

CHEM 105bL Lecture Notes - Lecture 7: Equilibrium Constant, Reversible Reaction, Dynamic Equilibrium

CHEM 104 Lecture Notes - Lecture 27: Vaporization, Lead, Supersaturation

CHEM 1A03 Chapter Notes - Chapter 15: Phosphorus Pentachloride, Equilibrium Constant, Chemical Equation

Related Questions