[化學] 幾題私醫考古題
1.冬季氣溫降至冰點時，汽車水箱會結冰，此時可添加下列何種物質以抗凍？
(A) CH2OHCH2OH (B) CH3OCH3 (C) CH3CH2OH (D) CH3COCH3
這題我記得高中時好像也有上到,我知道是(A)
但是想請問一下為何其他的選項不行呢?
2.C2, B2, H2 及N2 等分子之鍵長，依最短到最長之順序排列為下列何者：
(A) H2, N2, C2, B2 (B) H2, B2, C2, N2 (C) N2, C2, H2, B2 (D) B2, H2, C2 , N2.
這一題我是完全沒有頭緒
感覺有很多因素要考量
原子大小,還有鍵數的問題
尤其是B2跟C2
我不知道該如何畫它的結構式
請大家幫忙~
因為小弟為PTT新手
不太會回文
所以先在這跟大家說謝謝!
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