%%

Gaokao Chemistry Practice Question

下列叙述正确的是

  1. A.某温度下, 一元弱酸 $H (A)$的 $K_{a}$ 越小, 则 $N a A$的 $K_{b}$ （水解常数）越小
  2. B.铁管镀锌层局部破损后，铁管仍不易生锈
  3. C.反应活化能越高，该反应越易进行
  4. D.不能用红外光谱区分 $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}$ 和 $\mathrm{CH}_{3} \mathrm{OCH}_{3}$

Want to know if you got it right?

Answer this and thousands more real Gaokao previous-year questions free, get graded instantly, and climb the global ranked leaderboard.

Practice Gaokao free →

More Gaokao Chemistry questions