Interpretation:
For the given reaction, the equilibrium expression
Concept introduction:
Law of mass action: The
Multiple equilibria: If a reaction can be expressed as the sum of two or more reactions, the equilibrium constant for the overall reaction is given by the product of the equilibrium constants of the individual reactions.
The equilibrium constant for two separate equilibrium constants are,
For overall reaction, the equilibrium constant
Therefore,
Important rules for writing equilibrium constants:
- Reciprocal of X is 1/X: when the equation for a reversible reaction is written in the opposite direction, the equilibrium constant becomes the reciprocal of the original equilibrium constant.
- Value of K also depends on how the equilibrium equation is balanced. Consider as,
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
CHEMISTRY-ALEK 360 ACCES 1 SEMESTER ONL
- Write the expression for the equilibrium constant and calculate the partial pressure of CO2(g), given that Kp is 0.25 (at 427 C) for NaHCO3(s) NaOH(s) + CO2(g)arrow_forwardWrite an equation for an equilibrium system that would lead to the following expressions (ac) for K. (a) K=(Pco)2 (PH2)5(PC2H6)(PH2O)2 (b) K=(PNH3)4 (PO2)5(PNO)4 (PH2O)6 (c) K=[ ClO3 ]2 [ Mn2+ ]2(Pcl2)[ MNO4 ]2 [ H+ ]4 ; liquid water is a productarrow_forwardAt a certain temperature, K=0.29 for the decomposition of two moles of iodine trichloride, ICl3(s), to chlorine and iodine gases. The partial pressure of chlorine gas at equilibrium is three times that of iodine gas. What are the partial pressures of iodine and chlorine at equilibrium?arrow_forward
- Write the equilibrium constant for the reaction P4(s) + 6 H2(g) ⇋ 4 PH3(g), with the gases treated as perfect.arrow_forwardWrite the equilibrium-constant expression, Kc, for the following reaction. 3O2(g) ↔ 2O3(g)arrow_forwardWrite the reaction quotient, Qc, and the equilibrium constant, Kc, for 2N2O5(g) ⥫⥬ 4NO2(g) + O2(g)arrow_forward
- Write the equilibrium-constant expression Kc for H2(g) + I2(g) => 2 HI(g)arrow_forwardWrite the equilibrium constant for the reaction CH4(g) + 3 Cl2(g) ⇋ CHCl3(l) + 3 HCl(g), with the gases treated as perfect.arrow_forward2&3. Write the expression for Kc (equilibrium constant) for the following reactions.arrow_forward
- For the reaction CaCO3(s) ↔ CaO (s) + CO2 (g), the value of K is numerically the same whether the amount of CO2 is expressed as molarity or as gas pressure.arrow_forwardWhat is the symbolic expression for the equilibrium constant for the reaction: 2 C2H6(g) + 7 O2(g) ⇌ 4 CO2(g) + 6 H2O(g)?arrow_forwardWrite the chemical reactions whose equilibrium constants are Kb1 and Kb2 for the amino acid serine and find their numerical values.arrow_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
- Physical ChemistryChemistryISBN:9781133958437Author:Ball, David W. (david Warren), BAER, TomasPublisher:Wadsworth Cengage Learning,