Solid sodium hydrogen carbonate, nahco3, decomposes on heating according to the equation:
2 nahco3(s) < -> na2co3(s) + h2o(g) + co2(g)
a. a sample of 1.00 x 10^2 grams of solid nahco3 was placed in a previously evacuated rigid 5.00-liter container and heated to 160 c. some of the original solid remained and the total pressure in the container was 7.76 atmospheres when equilibrium was reached. calculate the number of moles of h2o(g) present at equilibrium. (2 marks)
b. how many grams of the original solid remain in the container under the conditions described in part (a)? (2 marks)
c. write the equilibrium expression for the equilibrium constant, kp, and calculate its value for the reaction under the conditions in part (a). (2 marks)
d. if 1.10 x 10^2 grams of solid nahco3 had been placed in the 5.00-liter container and heated to 160 c, what would the total pressure have been at equilibrium? explain. (2 marks)