Equilibrium 5

1
Equilibrium 5

• Equilibriums Effect on Solids and Liquids
• or. . .
• Yes they change too.

2
I thought you said. . .

• Solids and liquids are not part of the
  equilibrium.

3
2 (NH4)2CO3(s) ? 2 NH3 (g) CO2 (g) H2O (l)

• Solid ammonium carbonate, (NH4)2CO3, decomposes
  on heating according to the equation above.
• A sample of 100. grams of solid (NH4)2CO3 was
  placed in a previously evacuated rigid 5.00-liter
  container and heated to 160ºC. Some of the
  original solid remained and the total pressure in
  the container was 9.51 atmospheres when
  equilibrium was reached. Calculate the number of
  moles of NH3(g) and the number of moles of H2O(l)
  present at equilibrium.
• How many grams of the original solid remain in
  the container under the conditions described in
  (1)?
• Write the equilibrium expression for the
  equilibrium constant, Kp, and calculate its value
  for the reaction under the conditions in (1).
• If 110. grams of solid (NH4)2CO3 had been placed
  in the 5.00-liter container and heated to 160 ºC,
  what would the total pressure have been at
  equilibrium? Explain.
• After equilibrium is established, what will
  happen if an additional 10 mL of water is placed
  into the vessel? Explain.

4
2 (NH4)2CO3(s) ? 2 NH3 (g) CO2 (g) H2O (l)

• Solid sodium hydrogen carbonate, NaHCO3,
  decomposes on heating according to the equation
  above.
• A sample of 100. grams of solid NaHCO3 was placed
  in a previously evacuated rigid 5.00-liter
  container and heated to 160ºC. Some of the
  original solid remained and the total pressure in
  the container was 9.51 atmospheres when
  equilibrium was reached. Calculate the number of
  moles of NH3(g) and the number of moles of H2O(l)
  present at equilibrium.

5
2 (NH4)2CO3(s) ? 2 NH3 (g) CO2 (g) H2O (l)

• How many grams of the original solid remain in
  the container under the conditions described in
  (1)?

6
2 (NH4)2CO3(s) ? 2 NH3 (g) CO2 (g) H2O (l)

• Write the equilibrium expression for the
  equilibrium constant, KP, and calculate its value
  for the reaction under the conditions in (1).

7
2 (NH4)2CO3(s) ? 2 NH3 (g) CO2 (g) H2O (l)

• If 110. grams of solid (NH4)2CO3 had been placed
  in the 5.00-liter container and heated to 160 ºC,
  what would the total pressure have been at
  equilibrium? Explain.

8
2 (NH4)2CO3(s) ? 2 NH3 (g) CO2 (g) H2O (l)

• After equilibrium is established, what will
  happen if an additional 10 mL of water is placed
  into the vessel? Explain.