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Question 1 · Single choice · 中档
A. 均为芳香烃 B. 互为同素异形体 C. 互为同系物 D. 互为同分异构体
考点: 同分异构与同系物易错: 同分异构体重复或遗漏
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Question 2 · Single choice · 中档
A. 海带提碘 B. 氯碱工业 C. 氨碱法制碱 D. 海水提溴[来源:Z|xx|k.Com]
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Question 3 · Single choice · 中档
A. HBO2 B. H 2BO3 C. H 3BO3 D. H 2B4O7
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Question 4 · Single choice · 中档
A. CaO与CO 2 B. NaCl与HCl C. SiC与SiO 2 D. Cl 2 与I 2
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Question 5 · Single choice · 中档
A. 4-甲基-3-丙基戊烷 B. 3-异丙基己烷 C. 2-甲基-3-丙基戊烷 D. 2-甲基-3-乙基己烷
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Question 6 · Single choice · 中档
A. CH3COOH溶液与Zn反应放出H 2 B. 0.1 mol/L CH3COONa溶液的pH大于7 C. CH3COOH溶液与NaCO 3 反应生成CO 2 D. 0.1 mol/L CH3COOH溶液可使紫色石蕊变红
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Question 7 · Single choice · 中档
已知W、X、Y、Z为短周期元素,原子序数依次增大。W、Z同主族,X、Y、Z同周期,其中只有X 为金属元素。下列说法一定正确的是
A. 原子半径:X>Y>Z>W B. W的含氧酸的酸性比Z的含氧酸的酸性强 C. W的气态氢化物的稳定性小于Y的气态氢化物的稳定性 D. 若W与X原子序数差为5,则形成化合物的化学式为X 3W2
考点: 位置—结构—性质关系与元素推断
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Question 8 · Single choice · 中档
图1是铜锌原电池示意图。图2中,x轴表示实验时流入正极的电子的物质的量,y轴表示
A. 铜棒的质量 B. c(Zn 2+) C. c(H+) D. c(SO 42-)
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Question 9 · Single choice · 中档
向新制氯水中加入少量下列物质,能增强溶液漂白能力的是
A. 碳酸钙粉末 B. 稀硫酸 C. 氯化钙溶液 D. 二氧化硫水溶液
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Question 10 · Single choice · 中档
一定条件下,某容器中各微粒在反应前后变化的示意图如下,其中·和d代表不同元素的原子。 关于此反应说法错误的是
A. 一定属于吸热反应 B. 一定属于可逆反应 C. 一定属于氧化还原反应 D. 一定属于分解反应
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Question 11 · Single choice · 中档
合成导电高分子化合物PPV的反应为: 下列说法正确的是
A. PPV是聚苯乙炔 B. 该反应为缩聚反应 C. PPV与聚苯乙烯的最小结构单元组成相同 D. 1 mol 最多可与 2 mol H2 发生反应
考点: 合成高分子考法: 结构决定性质易错: 官能团遗漏
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Question 12 · Single choice · 中档
下列各组混合物,使用氢氧化钠溶液和盐酸两种试剂不能分离的是
A. 氧化镁中混有氧化铝 B. 氯化铝溶液中混有氯化铁 C. 氧化铁中混有二氧化硅 D. 氯化亚铁溶液中混有氯化铜
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Question 13 · Single choice · 中档
O2F2 可以发生反应:H2S+4O2F2→SF6+2HF+4O2,下列说法正确的是
A. 氧气是氧化产物 B. O2F2 既是氧化剂又是还原剂 C. 若生成4.48 L HF,则转移0.8 mol电子 D. 还原剂与氧化剂的物质的量之比为1:4
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Question 16 · Single choice · 中档
实验室提纯含少量氯化钠杂质的硝酸钾的过程如右图所示。 下列分析正确的是
A. 操作Ⅰ是过滤,将固体分离除去 B. 操作Ⅱ是加热浓缩,趁热过滤,除去杂质氯化钠 C. 操作Ⅲ是过滤、洗涤,将硝酸钾晶体从溶液中分离出来 D. 操作Ⅰ~Ⅲ总共需两次过滤
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Question 17 · Single choice · 中档
某铁的氧化物(FexO)1.52 g溶于足量盐酸中,向所得溶液中通入标准状况下112 ml Cl 2,恰好将Fe 2+ 完全氧化。x值为
A. 0.80 B. 0.85 C. 0.90 D. 0.93
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Question 18 · Multiple choice · 中档
一定条件下,一种反应物过量,另一种反应物仍不能完全反应的是
A. 过量的氢气与氮气 B. 过量的浓盐酸与二氧化锰 C. 过量的铜与浓硫酸 D. 过量的锌与18 mol/L硫酸
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Question 19 · Multiple choice · 中档
已知:SO32-+I2+H2O→SO42-+2I-+2H+。某溶液中可能含有Na +、NH4+、Fe2+、K+、I−、SO32- 、SO 42−, 且所有离子物质的量浓度相等。向该无色溶液中滴加少量溴水,溶液仍呈无色。下列关于该溶液的判 断正确的是
A. 肯定不含I − B. 肯定不含SO 42− C. 肯定含有SO 32− D. 肯定含有NH 4+
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Question 20 · Single choice · 中档
已知NaOH+Al(OH) 3→Na[Al(OH)4]。向集满CO 2 的铝制易拉罐中加入过量NaOH浓溶液,立即封闭罐 口,易拉罐渐渐凹瘪;再过一段时间,罐壁又重新凸起。上述实验过程中没有发生的离子反应是
A. CO2+2OH−→CO32−+H2O B. Al2O3+2OH−+3H2O→2[Al(OH)4] − C. 2 Al+2OH−+6H2O→2 [Al(OH)4] −+3H2↑ D. Al 3++4 OH−→[Al(OH)4]−
考点: 氧化铝、氢氧化铝的两性
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Question 21 · Multiple choice · 中档
A. CO2 是直线型分子,推测CS 2 也是直线型分子 B. SiH4 的沸点高于CH 4,推测H 2Se的沸点高于H 2S C. Fe与Cl 2 反应生成FeCl 3,推测Fe与I 2 反应生成FeI 3 D. NaCl与浓H 2SO4 加热可制HCl,推测NaBr与浓H 2SO4 加热可制HBr
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Question 22 · Single choice · 中档
称取(NH4)2SO4 和NH 4HSO4 混合物样品7.24 g, 加入含0.1 mol NaOH的溶液, 完全反应, 生成NH3 1792 mL(标准状况) ,则(NH4)2SO4 和NH 4HSO4 的物质的量比为
A. 1:1 B. 1:2 C. 1.87:1 D. 3.65:1
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Question 32 · Free response · 中档
人体血液中的碳酸和碳酸氢盐存在平衡:H ++ HCO3- H 2CO3,当有少量酸性或碱性物质进入血 液中时,血液的pH变化不大,用平衡移动原理解释上述现象。 ____________________________________________________________________________________
先写答案,再对照解析 等价写法不自动判错
直接输入 Formula Chemistry
→ ⇌ ↑ ↓ Δ ℃ ⁺ ⁻
写好了,对答案
Answer key 29. v 正 v 逆 平衡常数K 转化率 α 增大 增大 减小 减小 $30. 2 24 4cd xyab mn= 31.$大于;草酸;ac 32.当少量酸性物质进入血液中,平衡向右移动,使H +浓度变 化较小,血液的pH基本不变;当少量碱性物质进入血液中,平衡向左移动,使H +浓度变化较小,血 液的pH基本不变。 (合理即给分)
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Question 55 · Free response · 中档
53.甲烷和水蒸气反应的产物是合成甲醇的原料:CH4+H2O CO+3H 2 已知:CO+2H2 CH3OH CO 2+3H2 CH3OH+H2O 300 mol CH4 完全反应后的产物中,加入100 mol CO 2 后合成甲醇。若获得甲醇350 mol,残留氢气120
mol,计算CO 2 的转化率。
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