Consider the Following Reaction

Consider the following reaction:
SO₃( g ) + CaO( s )  CaSO₄( s ) .
If Δ G ⁰ is − 345 kJ\mol for this reaction at 298K, what is the K _eq at this temperature? Recall that R is 8.314 J mol ^{− 1} K ^{− 1} .

A) 3.1 × 10 ⁴⁰
B) 3.50 × 10 ⁵⁰
C) 2.96 × 10 ⁶⁰
D) 2.23 × 10 ⁷⁰