#### Given the reaction between 2 gases represented by A2 and B2 to give the compound AB(g).A2(g) + B2(g)  2 AB(g).At equilibrium, the concentrationof A2 = 3.0 x 10-3 Mof B2 = 4.2 x 10-3 Mof AB = 2.8 x 10-3 MIf the reaction takes place in a sealed vessel at 527oC, then the value of Kc will be: Option 1) 1.9 Option 2) 0.62 Option 3) 4.5 Option 4) 2.0

As learnt in

Option 1)

1.9

This option is incorrect.

Option 2)

0.62

This option is correct.

Option 3)

4.5

This option is incorrect.

Option 4)

2.0

This option is incorrect.