Wednesday, September 4, 2024
Sunday, November 24, 2024
问题:松树流出的树脂,用()法进行蒸馏,得到的油状液体称为松节油。
Saturday, November 23, 2024
Friday, August 30, 2024
Saturday, November 23, 2024
Saturday, June 1, 2024
Saturday, March 9, 2024
Saturday, September 28, 2024
Sunday, November 24, 2024
Sunday, November 24, 2024
Saturday, September 28, 2024
问题:精油中的酚类化合物和 NaOH 反应生成可溶于水的(),转入水相分中分离.
Saturday, September 28, 2024
Sunday, November 24, 2024
Sunday, November 24, 2024
Sunday, November 24, 2024
Sunday, November 24, 2024
问题:醛类化合物和亚硫酸氢钠发生加成反应,得到(),转入水相分中分离.
Saturday, November 23, 2024
Sunday, November 24, 2024
Monday, June 24, 2024
Saturday, November 23, 2024