Ch.14 - Chemical EquilibriumWorksheetSee 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: At 700 K, the reaction below has a Kp value of 54. An equilibrium mixture at this temperature was found to contain 1.84 atm of I2 and 4.24 atm of HI. Calculate the equilibrium pressure of H2.H2(g) + I2(g) <=> 2 HI(g).  Enter answer to 2 decimal placesA. 0.18 atm B. 0.04 atm C. 5.53 atm D. 0.30 atm E. 0.81 atm

Solution: At 700 K, the reaction below has a Kp value of 54. An equilibrium mixture at thistemperature was found to contain 1.84 atm of I2 and 4.24 atm of HI. Calculate the equilibrium pressure of H2.H2(g) + I2

Problem

At 700 K, the reaction below has a Kp value of 54. An equilibrium mixture at this
temperature was found to contain 1.84 atm of I2 and 4.24 atm of HI. Calculate the equilibrium pressure of H2.

H2(g) + I2(g) <=> 2 HI(g).  Enter answer to 2 decimal places

A. 0.18 atm
B. 0.04 atm
C. 5.53 atm
D. 0.30 atm
E. 0.81 atm

Solution

We’re being asked to determine the equilibrium concentration of H2 at 700 K for the following reaction:

H2(g) + I2(g)  2 HI(g)


Recall that the equilibrium constant is the ratio of the products and reactants

We use Kp when dealing with pressure and Kc when dealing with concentration:


Kp=PproductsPreactants     Kc=[products][reactants]


Note that solid and liquid compounds are ignored in the equilibrium expression.


Solution BlurView Complete Written Solution