Percent concentration was calculated from peak areas. - GC of the reaction mixture before the reaction - GC of the reaction mixture after the reaction Use the GC to analyze your reaction mixture and identify the products and calculate your yield and selectivity GCY Yeld =100 product peaks area(s) / total peaks area GC-product selectivity (2-nitrophenol) =1002-nitrophenol peak area(s) / (2-nitrophenol + 4-nitrophenol) peaks areas GC-product selectivity (4-nitrophenol) =100 (4-nitrophenol) peak area(s) / (2-nitrophenol + 4-nitrophenol) peaks areas