問題詳情

23.resorcinol於鹽酸存在下，會使下列何者呈現橘紅色反應？
(A)sucrose
(B)fructose
(C)mannose
(D)lactose

參考答案

答案：B
難度：適中0.520661
統計：A(27),B(126),C(25),D(28),E(0)

用户評論

【用戶】PPMTPASS

【年級】國三上

【評論內容】Seliwanoff’s test : A test for ketose SUG-ARS in solution. The reagent used consistsof benzene-1,3-diol (resorcinol) dissolved in hydrochloric acid.A few drops are addedto the solution and a red precipitate indi-cates a ketonic sugar. The test is named forthe Russian chemist F. F. Seliwanoff.

【用戶】Shannon Lai

【年級】高三上

【評論內容】間苯二酚與濃鹽酸的混合液可用於鑑別醛糖和酮糖，這個試驗稱為Seliwanoff試驗。