河南省南阳市2018_2019学年高一化学上学期期中试题(扫描版).doc

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1、 1 -河南省南阳市 2018-2019 学年高一化学上学期期中试题(扫描版)- 2 - 3 - 4 - 5 - 6 - 7 -2018 年秋期南阳市高中一年级期中考试化学参考答案及评分标准第I卷(选择题 共48分)一、选择题答题栏(共163=48分)题号 1 2 3 4 5 6 7 8答案 D D C c B D C A题号 9 10 11 12 13 14 15 16答案 B A D C A D C D第卷(填空题 共 52 分)18.(12 分)(1) 62.5(2 分)(2)缺少洗涤烧杯和玻璃棒的操作(2 分)不应该在量筒中稀释浓 H2SO4,应用烧杯(2 分)不应该用容量瓶保存溶液

2、应用细口瓶(2 分)(3)偏高(1 分) 偏高(1 分) 偏低(1 分) 偏高 (1 分)19.(7 分) (1)CaCO 32HCl= =CaCl2H 2OCO 2(2 分)(2)浓硫酸(1 分) 除去二氧化碳中混有的水蒸气(1 分)(3)2Na2O22CO 2=2Na2CO3O 2(2 分)(4)E(1 分)20 (13 分)(1)C(1 分)(2) 223Ca(l)HCa2HlO, (2 分)(2 分) B (1 分)(3) CO 32-+2H+= CO2 +H2O(2 分) 溶液先变红而后褪色(2 分) H+ HClO(2 分) d(1 分)21. (9 分) (1)10d(5+) (3 分)(2)7.14%(2 分) ;0.15mol(2 分) ;12(2 分) - 8 -

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