已知W、X、Y、Z为四种短周期元素,原子序数逐渐增大.其中W形成的单质是自然界中最轻的气体;X原子的最外

2025-04-04 11:15:36
推荐回答(1个)
回答1:

W、X、Y、Z为四种短周期元素,原子序数逐渐增大.W形成的单质是自然界中最轻的气体,则W为H元素;X原子的最外层电子数是次外层电子数的2倍,X原子只能有2个电子层,最外层电子数为4,则X为C元素;Y元素是地壳中含量最多的元素,则Y为O元素;Z元素是短周期中原子半径最大的元素,则Z为Na元素,
(1)C6H6是苯,结构简式为,分子空间构型为平面正六边形,
故答案为:;平面正六边形;
(2)O与Na形成的两种常见化合物为Na2O、Na2O2,电子式分别为
故答案为:
(3)由H、C、O三种元素形成的最简式为CH2O的化合物有A和B两种,其中A的相对分子质量是60,分子式为C2H4O2,是日常生活中的一种调味品的主要成分,则A为醋酸,结构简式为CH3COOH;
B的相对分子质量是A的3倍,B的分子式为C6H12O6,在正常人的血液里含有0.1%的B,B为葡萄糖,将B物质的溶液与新制的Cu(OH)2悬浊液共热,有生成氧化亚铜,观察到得现象是:有砖红色沉淀产生,
故答案为:CH3COOH;C6H12O6;有砖红色沉淀产生;
(4)将B(葡萄糖)在酒化酶的作用下可制得另外一种具有特殊香味的液态有机物C,同时得到一种能导致温室效应的气体,反应生成酒精与二氧化碳,反应方程式为:C6H12O6

酒化酶
 2C2H5OH+2CO2↑,
故答案为:C6H12O6
酒化酶
 2C2H5OH+2CO2↑;
(5)酒精燃烧生成二氧化碳与水,反应化学方程式为:C2H5OH+3O3
点燃
 2CO2+3H2O,酒精可以在Cu或Ag的催化作用下被氧气氧化成具有刺激性气味的液体,反应生成乙醛,该反应的化学方程式为:2C2H5OH+O2
Cu
2CH3CHO+2H2O,
故答案为:C2H5OH+3O3
点燃
 2CO2+3H2O;2C2H5OH+O2
Cu
2CH3CHO+2H2O.

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