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锌钡白是一种白色颜料。工业上是由ZnSO 4 与BaS溶液混合而成：BaS+ZnSO 4 = ZnS↓+BaSO 4 ↓。请根据以下工业生产流程回答有关问题。 I．ZnSO 4 溶液的制备与提纯： 有关资料：a．菱锌矿的主要成分是ZnCO 3 ，含少量SiO 2 、FeCO 3 、Cu 2 (OH) 2 CO 3 等；b．Zn(OH) 2 与Al(OH) 3 相似，能溶于过量的NaOH溶液生成Na 2 ZnO 2 ； （1）滤渣1的化学式为 ；②中使用的氧化剂最好是下列的 （填序号）。 A．Cl 2 B．H 2 O 2 C．KMnO 4 D．浓HNO 3 （2）滤渣2中主要成分的化学式为 ；为了达到综合利用、节能减排的目的，上述流程步骤④中的CO 2 可以来自于步骤 （选填①、②、③、⑤）。 （3）步骤④发生的离子反应方程式为 。 II．BaS溶液的制备 有关数据：Ba（s）＋S（s）＋2O 2 （g）＝BaSO 4 （s） △H 1 = －1473.2 kJ?mol －1 C（s）＋ 1/2O 2 （g）＝CO（g）         △H 2 = －110.5 kJ?mol －1 Ba（s）＋ S（s）＝BaS（s）           △H 3 = －460 kJ?mol －1 （4）若煅烧还原的产物仅为BaS和CO，则其反应的热化学方程式为： 。 Ⅲ.制取锌钡白 （5）如果Ⅰ中步骤⑤使用硫酸过量，产生的后果是 。
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参考答案：
举一反三
【单选题】听力原文：M: You seem to stay late last night. Do you get yourself enough sleep every night? W: I dream of it. But I am often kept busy around the house almost every night? Q: Why can't the woman go to sle...
A.
Because she goes to work near her house.
B.
Because she likes to stay late.
C.
Because she dreams a lot every night.
D.
Because she is busy at home.
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【单选题】下列句中加点的成语使用不恰当的一项是
A.
对于重要的书,我们必须常常反复阅读,每读一次都会觉得 开卷有益 。
B.
骇人听闻 的校园伤害案一再发生,提醒我们同学要增强自我保护意识。
C.
在社会实践活动中,同学们既体验到了合作之趣,又享受到了 天伦之乐 。
D.
那最嫩最小的花苞像一个 忍俊不禁 的笑容,就要绽开似的。
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【单选题】—— Do you ______ dream at night?
A.
sometime have
B.
never has
C.
often have
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【判断题】科学创新主要表现在研究领域的拓展和研究国界的突破
A.
正确
B.
错误
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【简答题】阅读理解。 Do you remember your dreams? Do people have the same dream? Why do we dream? There are many questions about dreams. We dream during the REM (rapid eye movement 眼球快速移动) stage of sleep. We have ab...
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【单选题】听力原文：M: You seemed to stay up late last night. Do you get yourself enough sleep? W: I dream of it. But I am often kept busy around the house almost every night. Q: What can we learn about the conversa...
A.
She often dreams a lot at night.
B.
She goes to work every night.
C.
She likes to stay up late.
D.
She is busy with housework.
查看完整题目与答案
【判断题】(9)对于一个已定的计算公式，其系数不会随其公式中的变量单位的不同而变化
A.
正确
B.
错误
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【单选题】下列句子中加点成语使用恰当的一 项是
A.
小屋的“领空”适宜心灵散步，眼睛旅行，也就是古人说的 秀色可餐 。
B.
小张因为在课堂上答错了个问题， 弄得面红耳赤、 声名狼藉 。
C.
弟弟每晚学习到深夜，真是学而不厌， 诲人不倦 。
D.
假如不愿走向深渊，就让我们走向阔野;假如不愿 坐享其成 ，就让我们勤勉奋斗。
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【简答题】How do you remember the way to your house ?where do deams come from ? it is your brain that does these things. A British scientist showed that "sleep can improve one's memory". It's not a dream for st...
查看完整题目与答案
【单选题】听力原文：M: You seemed to stay up late last night. Do you get yourself enough sleep? W: I dream of it. But I am often kept busy around the house almost every night. Q: What can we learn about the conversa...
A.
She often dreams a lot at night.
B.
She likes to stay up late.
C.
She goes to work every night.
D.
She is busy with housework.
查看完整题目与答案
相关题目：
【单选题】听力原文：M: You seem to stay late last night. Do you get yourself enough sleep every night? W: I dream of it. But I am often kept busy around the house almost every night? Q: Why can't the woman go to sle...
A.
Because she goes to work near her house.
B.
Because she likes to stay late.
C.
Because she dreams a lot every night.
D.
Because she is busy at home.
查看完整题目与答案
【单选题】下列句中加点的成语使用不恰当的一项是
A.
对于重要的书,我们必须常常反复阅读,每读一次都会觉得 开卷有益 。
B.
骇人听闻 的校园伤害案一再发生,提醒我们同学要增强自我保护意识。
C.
在社会实践活动中,同学们既体验到了合作之趣,又享受到了 天伦之乐 。
D.
那最嫩最小的花苞像一个 忍俊不禁 的笑容,就要绽开似的。
查看完整题目与答案
【单选题】—— Do you ______ dream at night?
A.
sometime have
B.
never has
C.
often have
查看完整题目与答案
【判断题】科学创新主要表现在研究领域的拓展和研究国界的突破
A.
正确
B.
错误
查看完整题目与答案
【简答题】阅读理解。 Do you remember your dreams? Do people have the same dream? Why do we dream? There are many questions about dreams. We dream during the REM (rapid eye movement 眼球快速移动) stage of sleep. We have ab...
查看完整题目与答案
【单选题】听力原文：M: You seemed to stay up late last night. Do you get yourself enough sleep? W: I dream of it. But I am often kept busy around the house almost every night. Q: What can we learn about the conversa...
A.
She often dreams a lot at night.
B.
She goes to work every night.
C.
She likes to stay up late.
D.
She is busy with housework.
查看完整题目与答案
【判断题】(9)对于一个已定的计算公式，其系数不会随其公式中的变量单位的不同而变化
A.
正确
B.
错误
查看完整题目与答案
【单选题】下列句子中加点成语使用恰当的一 项是
A.
小屋的“领空”适宜心灵散步，眼睛旅行，也就是古人说的 秀色可餐 。
B.
小张因为在课堂上答错了个问题， 弄得面红耳赤、 声名狼藉 。
C.
弟弟每晚学习到深夜，真是学而不厌， 诲人不倦 。
D.
假如不愿走向深渊，就让我们走向阔野;假如不愿 坐享其成 ，就让我们勤勉奋斗。
查看完整题目与答案
【简答题】How do you remember the way to your house ?where do deams come from ? it is your brain that does these things. A British scientist showed that "sleep can improve one's memory". It's not a dream for st...
查看完整题目与答案
【单选题】听力原文：M: You seemed to stay up late last night. Do you get yourself enough sleep? W: I dream of it. But I am often kept busy around the house almost every night. Q: What can we learn about the conversa...
A.
She often dreams a lot at night.
B.
She likes to stay up late.
C.
She goes to work every night.
D.
She is busy with housework.
查看完整题目与答案
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