怎样连接长颈漏斗与单孔塞要不要蘸水?

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/18 02:51:01

怎样连接长颈漏斗与单孔塞要不要蘸水?
怎样连接长颈漏斗与单孔塞
要不要蘸水?

怎样连接长颈漏斗与单孔塞要不要蘸水?
先把长颈漏斗的下端蘸水,然后稍带旋转的塞进胶塞中,期间要注意不可用力过猛,以防扎了手.

不要，玻璃中的Si会和水反应。
严格的说硅能和水反应 只不过反应过于微弱 一般都视为不反应 有方程为证
Si+2NaOH+H2O=Na2SiO3+2H2
是由方程
Si+4H2O=H4SiO4+2H2↑
H4SiO4=H2SiO3+H2O
H2SiO3+2NaOH=Na2SiO3+2H2O
合成的

可以适当蘸水，使它更容易套进。你可以将它蘸水后，将其慢慢旋入，切勿硬套入，这样会损坏仪器
LZD说得虽然是不错，但是反应太过于微弱了吧，一般是可以忽视的

00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...

全部展开

0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000bh jd gggghsd chydfv yudfvb ahey dj dh jdjcj fdfbadfgadfgadrgvfbvqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqgggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg

收起

怎样连接长颈漏斗与单孔塞要不要蘸水? 制取CO2,把长颈漏斗改为注射器,用单孔胶塞还是双孔 家庭小实验：制取氯化氢气体通入水中得到盐酸.用NaCl与H2SO4制取HCl.没有分液,长颈漏斗和锥形瓶,但有单孔橡皮塞,导管,试管和水,请问怎样制作?（换言之：就是没有双氧水二氧化锰制氧气的 实验室制取二氧化碳时,应该选用的仪器是A、铁架台、单孔塞、长颈漏斗、导管、集气瓶B、大试管、导管、集气瓶、玻璃片、水槽C、导管、集气瓶、玻璃片、酒精灯、单孔塞D、铁架台、大 制取CO2,把长颈漏斗改为注射器,用单孔胶塞还是双孔还有导管不是么高手进 长颈漏斗与分液漏斗的区别,怎样区分? 长颈漏斗与分液漏斗的区别 长颈漏斗与普通漏斗的不同是什么 长颈漏斗与分液漏斗的区别? 长颈漏斗与漏斗有何区别与漏斗的上部形状有无关系? 分液漏斗与长颈漏斗区别,还有哪个漏斗要伸入液面以下 在制取二氧化碳时为什么用长颈漏斗而不是分液漏斗?分液漏斗与长颈漏斗不是分液漏斗更好,能控制反应速率吗? 怎样将长颈漏斗和试管连接? 实验室制取氢气的简易装置长颈漏斗要不要插入液面下,why? 长颈漏斗与分液漏斗的区别与联系? 悬赏30,怎样检查长颈漏斗的气密性 分液漏斗,长颈漏斗 普通漏斗可不可以代替长颈漏斗?