【文档说明】河南省郑州外国语学校2024-2025学年高二上学期10月月考试题 化学 PDF版含答案.pdf,共(9)页,6.880 MB,由小赞的店铺上传
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QkBEAAQgGhBAIsAAACRFABCA=}#}郑州外国语学校2024—2025学年高二上期月考1答案化学(75分钟100分)一.选择题1-5CACDC6-10ACCBB11-14DCDC二.非选择题(共58分)15.(每空2分,共12分)(1)H2
(g)+1/2O2(g)=H2O(l)△H=-286kJ/mol(2)CH4-8e-+4O2-=CO2+2H2O(3)Na+(或阳离子)a2Cl-+2H2O2OH-+Cl2↑+H2↑,(4)-(2x+y)16.(每空2分,共18分)(1)H2O2+2I-+2H+=I2+2H2O(2)催化剂ab(
3)KI-淀粉溶液(4)832其他条件不变,增大硫酸浓度(或氢离子浓度)可以加快反应速率(5)v(A)<v(B)17.(每空2分,共14分)(1)①负极H2-2e-+2OH-=2H2O②c(2)AD2Cd
(OH)2eCd2OH2H224OH4eO2HO18.(每空2分,共14分)(1)413(2)①0.125mol·L−1·min−1②K1=K2(3)①不是温度升高平衡逆移,甲醇产率降低②1③1.25