实验室制备NaI的装置如图所示,基本步骤为:https://bgk-photo.cdn.bcebos.com/e1fe9925bc315c60ffa69e8e9db1cb13495477a4.jpg检查装置气密性;https://bgk-photo.cdn.bcebos.com/94cad1c8a786c9179430a758d93d70cf3bc757a4.jpg关闭K,向B中滴入https://bgk-photo.cdn.bcebos.com/b812c8fcc3cec3fd070d5214c688d43f879427a4.jpg溶液,制得https://bgk-photo.cdn.bcebos.com/0824ab18972bd40724f5269c6b899e510fb309a4.jpg;https://bgk-photo.cdn.bcebos.com/d8f9d72a6059252d56c39765249b033b5ab5b9ff.jpg打开K,通入https://bgk-photo.cdn.bcebos.com/7aec54e736d12f2e0ad124015fc2d562843568ff.jpg至饱和制得NaI,同时有黄色沉淀产生;https://bgk-photo.cdn.bcebos.com/fcfaaf51f3deb48f4fbd2bbfe01f3a292cf578ff.jpg关闭K,向所得溶液加入稀硫酸,水浴加热,充分逸出https://bgk-photo.cdn.bcebos.com/9922720e0cf3d7ca0ac4ca17e21fbe096b63a9a5.jpg;https://bgk-photo.cdn.bcebos.com/1b4c510fd9f9d72a1f56e57cc42a2834349bbba5.jpg把B中混合液倒入烧杯,加入足量碳酸钡除去稀硫酸,再经过一系列操作得到NaI成品。下列有关叙述错误的是https://bgk-photo.cdn.bcebos.com/3b87e950352ac65c80379312ebf2b21193138aa5.jpgA、A中装置可随开随用、随关随停,制备气体原理为:B、https://bgk-photo.cdn.bcebos.com/3b292df5e0fe992576d9e33124a85edf8cb171fe.jpgC、制备NaI涉及以下两个反应:D、https://bgk-photo.cdn.bcebos.com/9d82d158ccbf6c815be2a689ac3eb13532fa40fe.jpgE、、F、https://bgk-photo.cdn.bcebos.com/9e3df8dcd100baa138f9cdda5710b912c9fc2efe.jpgG、装置B中的恒压分液漏斗可以平衡分液漏斗和三口烧瓶内压强,便于液体顺利流下H、步骤I、https://bgk-photo.cdn.bcebos.com/7c1ed21b0ef41bd5ab87629541da81cb38db3dfe.jpgJ、中的“一系列操作”包括过滤、洗涤、合并滤液和洗液、蒸馏等操作