Question

為驗證鹵素單質氧化性的相對強弱，某小組用右圖所示裝置進行試驗(夾持儀器已略去，氣密性已檢驗)。試驗過程：

I．打開彈簧夾，打開活塞a，滴加濃鹽酸。
II．當B和C中的溶液都變為黃色時，夾緊彈簧夾。
III．當B中溶液由黃色變為棕色時，關閉活塞a。
IV．……
試回答下列問題：
（1）A中產生                                                                                                        色氣體，其結構式是                 。
（2）能使濕潤的淀粉—KI試紙變藍的氣體是                                                                 。
(a) Cl₂ (b) N₂O₄ (c) I₂蒸氣 (d) SO₂ (e) O₃ (f) CO₂
（3）滴加濃鹽酸前，分液漏斗首先要                                                                                                                      。
（4）過程III實驗目的是                                                                                                                                                                                                                                                            。
（5）A中產生氯氣的離子方程式為                                                                                                                                                                                                                                                       。
（6）B中浸有NaOH溶液的棉花作用是                                                                                              ，寫出反應的離子方程式                                                                                                                                                                                                                                                                        。

Answer 1

a、b、c、e

黃綠色

Cl—Cl

（1）                           ，                        （2）                                       

打開分液漏斗口上的玻璃塞

（3）                                                                                                        

確認C的黃色溶液中無Cl2，排除Cl2對溴置換碘實驗的干擾

（4）                                                                                                        

（5）                                                                                                        

吸收Cl2，防止對環境造成污染

（6）                                                                                   ，

                                                                                                

略