题目

电解原理在化学工业中有广泛应用。（1）氯碱厂电解饱和食盐水制取烧碱,若利用下图装置制备NaOH，两电极区电解液分别为NaOH和NaCl溶液。 ①B极区电解液为             溶液（填化学式），A极要连接电源的_             (填“正”或“负”)极 ②阳极电极反应式为                             ，电解过程中Na+向             电极迁移（填“A”或“B”） ③电解总反应的离子方程式是                         短文改错。My family has been going through hard times late.I don't let that to get me down.So I started working in my spare times.One weekend I was going to buy a pair of new shoes by the moneyI'd saved.That same weekend my mom was upset because my grandparents needed some money for one of their bills.So she didn't have enough money to give them.So I got a envelope and wrotemy grandparents a letter,say I love them and I would send them the money.It made my mom crytears of joy after learning of that I had done.It makes my grandparents cry too because they didn'tknow a teen as me could care so much.