2NaHCO3(s) ⇌ Na2CO3(s) + CO2(g) + H2O(g) Kp = 0.23 at 100℃

2NaHCO3(s) ⇌ Na2CO3(s) + CO2(g) + H2O(g) Kp = 0.23 at 100℃

Sodium carbonate, Na2CO3(s), can be prepared

by heating sodium bicarbonate, NaHCO3(s).

2NaHCO3(s) ⇌ Na2CO3(s) + CO2(g) + H2O(g) Kp = 0.23 at 100℃

If a sample of NaHCO3 is placed in an evacuated flask

and allowed to achieve equilibrium at 100℃,

what will the total gas pressure be?

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Kp = (P_CO2) (P_H2O)

( 참고 https://ywpop.tistory.com/7136 )

0.23 = (x) (x) = x^2

x = 0.23^(1/2) = 0.48

(P_CO2) + (P_H2O)

= 0.48 + 0.48 = 0.96 atm

답: 0.96 atm

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