IBDP化學課程真題講解（4）

通常而言，IBDP 化學被視作一門比較難的學科。但對于一些小伙伴而言，IB化學卻并不那么難。這兩者并不矛盾。今天帶著大家一起看一道IBDP化學課程的真題（HIGHER LEVEL PAPER 2）。這道題取自于IBDP chemistry specimen paper。不多說，直接上題。

題目1：One of the main constituents of acid deposition is sulfuric acid. This acid is formed from the sulfur dioxide pollutant.A mechanism proposed for its formation is:

(b) Consider the following equilibrium between the two oxides of sulfur, sulfur dioxide and sulfur trioxide:

題目難度：簡單。

考點分析：考查position of equilibrium shift

題目分析：升高溫度朝著吸熱的方向移動，升高壓強朝著分子數減少的方向移動，加催化劑不影響。

正確答案：

題目2：One of the main constituents of acid deposition is sulfuric acid. This acid is formed from the sulfur dioxide pollutant.A mechanism proposed for its formation is:

(a) State what the symbol (·) represents in the species shown in this mechanism. [1]

題目難度：簡單。

考點分析：考查free radical

題目分析：點就代表radical，也就是未成對的電子。

正確答案：radical / unpaired electron

掃碼添加翰林顧問老師，可一對一制定國際課程規劃

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