西南大学附中一诊模拟考试化学答案
西南大学附中高2025届高三上12月阶段性检测(三)化学参考答案1.答案B。玻璃纤维的主要成分是SiO2,B错误;2.答案C。【解析】A.氧化还原反应原理错误,应该得到Fe2+,离子方程式应该为2Fe3++Cu=2Fe2++Cu2+B.纯碱可以去油污是因为发生了水解,多元弱酸根水解是分步进行的,且水解很微弱,中间用可逆符号,离子方程式应该为CO2−3+H2OHCO−3+OH-C.漂白粉溶液暴露在空气中会与空气中的CO2和H2O反应产生CaCO3沉淀HClO,C正确。D.配制银氨溶液时产生的Ag(NH3)2OH是强碱,要拆开写,且方程式不满足质量守恒,离子方程式应该:AgOH+2NH3·H2O=...
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