26.(15分)(1)增大固体与气体的接触面积,增大反应速率,提高原料的利用率。(2分)(2)2CeO2+2C1+8H=2Ce+Cl2↑+4H4O;(2分)将HC1(盐酸)改用H2SO4酸浸(1分)(3)分液漏斗(1分)随着c(SO2)增大,水层中Ce“被SO结合成 Ceso.F,导致萃取平衡向逆向移动,D迅速减小(2分)00024mo/L(2分)(4)A(1分);(5)2Ce(OH)3+NaClO+H 0=2Ce(OH)4+NaCI(2/)(a1-5b,)×17.2%(2分)

书面表达One possible version:NOTICEA sports meeting will be held in the playground of our school from next Thursday to FridayAs you know, the pressure of study is very heavy now, especially for those senior 3. So the purpose of the sports meeting is to letevery student get relaxed, as a result of which we students can live happily and heal thilyEveryone is welcome to take part in it. Those who perform excellently at the sports meeting will get prizes. But don' t take theresults so serously because taking part is more important than the result. Good luck to everyone!

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