The value of is atm at 25°C for the reaction:

CHEMISTRY · Subjective · A Level · Chemistry · Gaseous equilibria (Kp) · Gaseous equilibria (Kp)

Problem

The value of KPK_P is 1×10−31 \times 10^{-3} atm −1^{-1} at 25°C for the reaction: 2NO(g)+Cl2(g)⇌2NOCl(g)2\text{NO}(\text{g}) + \text{Cl}_2(\text{g}) \rightleftharpoons 2\text{NOCl}(\text{g}) . A flask contains NO at 0.02 atm and at 25°C. Calculate the mol of Cl2\text{Cl}_2 that must be added, if 1% of the NO is to be converted to NOCl at equilibrium. The volume of the flask is such that 0.2 mol of gas produce 1 atm pressure at 25°C. (Ignore probable association of NO to N2O2\text{N}_2\text{O}_2 ) (Roorkhee 2001)

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