2022届高三t8联考答案

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第四部分写作第一节短文改错I loved reading when I was a child. There weremany books that I was fond of, but my favorite" GreaiExpectations by Charles Dickens. I got it as A birthday giftfrom my mom. I liked this classic novel because I wasimpressed by the vivid description of thecharacters. And the plot full of twists and turns alwaysmade me eager to find out howwould happen next. In myopinion, Pip was a hero for many young children like meWhenever I down, I would open this book and find aninspiring chapter to read h. In that way, I was rechargeded

28.(1)2c+b-a(2分)(2)①>(1分)②0.16(2分);4(2分);不变(2分)(3)①NH4NO3(仅答“NH3·H2O”不给分,多答“NH3·H2O”不扣分,1分);NO+6H++5eNHH2O(2分)②(NO)>c(NH)>c(H+)>c(OH-)(2分)(4)O为将NOh氧化成更高价态的氮氧化物(1分)【解析】本題主要考查化学反应原理,考查学生的综合运用能力和理解能力(2)①由图可知温度升高,平衡逆向移动,则该反应的正反应为放热反应;D点对应的CO2的百分含量低于A点对应的,处于不平衡状态,而化学反应最终必须达到平衡状态,D要回归到A点,使CO2的百分含量增大,化学反应向正向进行,所以>。C(s)+2NO(g)CO2(g)+N2(g)c(起始)/(mol·L-1)00△c/(mol·L-1)1.60.80.8c(平衡)/(mol·L-)0.40.80.8NO=4=16mol·L-1100.16mo·Lmn;K=C(COh2)·c(N)_0.8×0.8C(NO)0.4C(s)+2NO(g)。COh(g)+№2(g)反应前后气体体积不变,保持温度和容器容积不变,向密闭容器中充入N2、COh2各0.60mol(按生成物比例加入),平衡后各组分的百分含量变化情况,相当于加压,所以新的平衡后,CO2平衡体积百分含量不变(3)①电解池阴极发生还原反应,由总电解反应式可知,NO还原产物为NH+,其电极反应式为NO+6Ht5e -NHt +HgO②常温下HNO的电离常数K,=7.1×10-4mo·L-1,NH3·H2O的电离常数Kb=1.7×105mol·L-因为K>K,NH的水解程度大于NO万的水解程度NHNO2溶液显酸性,故0.1mol·L-的NHNO2溶液中各离子浓度大小顺序为c(NO)>(NH)>c(H)>c(OH-)(4)n(X(5>1时,NO的含量降低,可能是O将NOh氧化为了更高价态的氮氧化物