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高二化学学业水平测试阶段检测四参考答案
单项选择题:每题 3分,共 69分
题号 1 2 3 4 5 6 7 8 9 10 11 12
选项 A D C B D A C A A A B A
题号 13 14 15 16 17 18 19 20 21 22 23
选项 B B B A A D C C D C D
24. (1)(3分)①a ② b ③PbS
(2)(8分)①碘 氟 钙
②c d f
Al(OH)3+3H+=Al3++3H2O
(3)(4分)①Na4Si24 == 4Na+Si24 ②半导体 ③b
(方程式每空 2分,其余每空 1分)
25.(6分) (1)CaCN2 (1分) (2)
(3)CO2+OH—=HCO3— (2分)
(4)2Cl2+2Ca(OH)2=CaCl2+Ca(ClO)2+2H2O (2分)
26.(10分)(1)3I2+6OH
-
=5I-+IO3
-
+3H2O (2分)
(2)避免 N2H4·H2O高温分解 (2分)
(3)加入淀粉溶液,加盐酸酸化,若溶液变蓝色,说明废水中含有 IO3
-
;若溶液不变
蓝,说明废水中不含 IO3
-
(2分)
(4)① 95%(2分)
②部分 NaI被空气中 O2氧化(或样品在空气中吸水) (2分)
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高二必修学科阶段检测四化学答题卡高二必修学科阶段检测四化学答题卡
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