In which of the following is it necessary to use an expanded octet to represent a Lewis structure which has zero formal charge on the central atom? (I) SO4 2− (II) SiCl2F2 (III) CO3 2− (IV) PO4 3− (V)

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consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

24

answeridentity;