Ask questions and get helpful answers.

Sodium carbonate, Na2CO3(s), can be prepared by heating sodium bicarbonate, NaHCO3(s).

2NaHCO3(s) → Na2CO3(s) + CO2(g) + H2O(g) Kp = 0.34 at 160 ºC
If a sample of NaHCO3 is placed in an evacuated flask and allowed to achieve equilibrium at 100 ºC, what will the total gas pressure be?

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
1 answer
  1. Did you make typo? If Kp is at 160 C then it will be different at 100 C. Assuming you mean Ptotal at 160 C...
    ....2NaHCO3(s)=>Na2CO3(S)+CO2(g)+H2O(g)
    I...solid.......solid......0......0
    C...solid.......solid......p......p
    E...solid.......solid......p......p

    Kp = pCO2 * pH2O
    Substitute the E line into Kp expression and solve for p. Then total P is 2p.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Answer this Question

Related Questions

Still need help?

You can ask a new question or browse existing questions.