Answer :
Kp is the equilibrium constant of the reaction in accordance with the partial pressure of the gas. The mass percentage of calcium carbonate is 2.5%.
What is the mass percentage?
The mass percentage is the ratio of the moles reacted to that of the moles present initially multiplied by 100.
The reaction of calcium carbonate can be shown as,
CaCo3 -----------------> CaO + CO2
The formula for the equilibrium constant is given as,
Kp= Kc[tex](RT)^{n}[/tex]
Here,
n = 1
Gas constant (R) = 8.314 J /mol K
Temperature (T) = 1073 K
Kp = 1.16
= 1.3 x [tex]10^{-4}[/tex]
Substituting values in the above equation:
x =0.005
From the ICE table of the reaction the value of moles of calcium carbonate (x) is calculated as:
Mass% = 0.005/0.2x 100%
2.5%
Therefore, 2.5% is the mass percentage.
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