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龙岩市一级校2022-2023学年第一学期期末高三联考化学参考答案一、选择题:本题共10小题,每小题2分,共20分。题号12345678910答案CBDBAACCAD二、非选择题:本题共5小题,共60分。11.(12分)(1)多次浸取;适当增大稀硫酸浓度;充分搅拌;适当升高温度;粉碎(任
答1种,其他合理答案也给分)(1分)(2)Al(OH)3...............................................................................................
.................................(1分)3Fe2++MnO-4+8H2O===MnO(OH)2↓+3Fe(OH)3↓+5H+.................................
.....(2分)(3)Zn.................................................................................................................................
.........(1分)(4)5Zn2++10HCO3-===Zn5(CO3)2(OH)6·2H2O↓+8CO2↑............................................(2分)(5)n[
Zn(OH)2]∶n(ZnO)=1∶4.........................................................................................
......(2分)(6)加入最后一滴氢氧化钠溶液,溶液颜色由无色变为浅红色且半分钟内不变色.....(1分)97.2%.....................................................................................
..............................................(2分)12.(11分)(1)Cu+4HNO3===Cu(NO3)2+2NO2↑+2H2O..............................................
....................(2分)(2)HNO3......................................................................................
..............................................(1分)(3)Cu(NO3)2..............................................
................................................................................(1分)向④中溶液通入NO2气体后,加入铜片..................
.....................................................(1分)N2(或稀有气体等其他不与体系发生反应的气体)........................
...........................(1分)HNO2.......................................................................................
.............................................(1分)(4)排除通NO2带来的硝酸浓度增大的影响......................................................................
.(1分)(5)2HNO3+H2O2+Cu===Cu(NO3)2+2H2O....................................................................(1分)9
0%............................................................................................................
..........................(2分)13.(14分)(1)2NH3(g)+CO2(g)CO(NH2)2(s)+H2O(g),△H1=-87.0kJ/mol.................
.......(2分)(2)该反应正向放热,气体分子数减小,高压低温有利于平衡右移,提高原料利用率。(2分)(3)①ABD.......................................
...........................................................................................(2分)②44.4%......................................
.........................................................................................(1分)50........................................
..............................................................................................(1分)③............................
...................................................(2分)(4)①CO(NH2)2+NO(g)+NO2===2N2(g)+CO2(g)+2H2O..
.................................(2分)②相对于NO2,NO难溶于水,难与尿素接触反应,未参与反应的NO增多,导致总还原率降低。(2分)14.(11分)(1)3d64s2...............................................
....................................................................................(1分)sp2............................
..............................................................................................................(1分)(2)65
.........................................................................................................................................(1分)(3
)交错......................................................................................................................
................(1分)旋转势垒很小,两种结构能量非常接近,气态时二者会相互转化..........................(2分)(4)Pb原子上有孤对电子,对二茂环有排斥.............................................
.........................(2分)(5)6....................................................................................................
........................................(1分)302334120106.0210a.................................................................
......................................(2分)15.(12分)(1)苯乙烯(或乙烯苯)........................................
.................................................................(1分)(2)........................................
.....................................................................................(1分)(3).......................
.................(2分)(4)取代反应................................................................................................
..............................(1分)(5)羰基、羧基....................................................................................
......................................(2分)(6)...............................................................................
.............(2分)(7)............................................................................................................
.............................................(3分)