Value of KP in the reaction MgCO3(s)→MgO(s)+CO2(g) is
A
KP=PCO2
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B
KP=PCO2×PCO2×PMgOPMgCO3
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C
KP=PCO2×PMgOPMgCO3
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D
KP=PMgCO3PCO2×PMgO
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Solution
The correct option is AKP=PCO2 MgCO3(s)→MgO(s)+CO2(g) MgO & MgCO3 are solid and they do not exert any pressure and hence only pressure only pressure exerted is by CO2. Therefore KP=PCO2