四川省名校联盟2025届高三12月联考化学答案
四川省名校联盟12月联考化学试题参考答案1——5ACCBB6——10ADCBD11——14ACBD15(14分)(1)三颈烧瓶(1分)(2)作还原剂,将NaClO3还原为ClO2(2分)稀释ClO2,防止其分解爆炸(1分)(3)2ClO2+H2O2+2OH-=2ClO-2+O2+2H2O(2分)防止NaClO2分解为NaClO3和NaCl;充分收集ClO2以提高其利用率(共2分)(4)ac(2分)(5)①滴入最后半滴标准液,锥形瓶内溶液蓝色褪去且半分钟内不复原(2分)②90.5%(2分)16(15分)(1)-41.2(2分)(2)①M(1分)②增加水的用量,反应2和反应3平衡都向正反应方向移动...
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