2.(1)分析下表中各項(xiàng)的排布規(guī)律,按此規(guī)律排布第22項(xiàng)應(yīng)為
.
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
C2H4 | C2H6 | C2H6O | C2H4O2 | C3H6 | C3H8 | C3H8O | C3H6O2 | C4H8 | C4H10 |
(2)下列反應(yīng)中屬于取代反應(yīng)的是
.(填序號(hào))
①乙烯使酸性高錳酸鉀溶液褪色 ②甲烷和氯氣混合光照 ③苯使溴水層褪色
④乙酸和乙醇反應(yīng) ⑤乙醇變成乙醛 ⑥葡萄糖發(fā)生銀鏡反應(yīng).