# Equilibrium constant

by fk378
Tags: constant, equilibrium
 P: 368 1. The problem statement, all variables and given/known data The total pressure of gases in equilibrium with solid sodium hydrogen carbonate at 110.0 degrees C is 1.648 atm, corresponding to the reaction 2NaHCO3(s) <--> Na2CO3(s) + H2O(g) + CO2(g) a) Calculate the value of the equilibrium constant at 110.0 degrees C. 3. The attempt at a solution I don't know how to begin this because I don't know how to find the initial partial pressure of sodium hydrogen carbonate. How am I supposed to use P total at equilibrium in this problem?
 P: 44 The solid sodium bicarbonate has negligible vapor pressure at 110 degrees C. We usually treat solids as constants, which we then divide out of the equilibrium constant; the only terms you should be left with in your expression for K are from gaseous water and gaseous carbon dioxide. This approach for dealing with solids holds true in general, unless the equilibrium being studied occurs in a solid solution (e.g., molten rock.)

 Related Discussions Materials & Chemical Engineering 6 Biology, Chemistry & Other Homework 2 Chemistry 1 Biology, Chemistry & Other Homework 7 Chemistry 8