试题与答案

“节能减排”,减少全球温室气体排放,意义十分重大。二氧化碳的捕捉与封存是实现温室

题型:填空题

题目:

“节能减排”,减少全球温室气体排放,意义十分重大。二氧化碳的捕捉与封存是实现温室气体减排的重要途径之一,科学家利用溶液喷淋“捕捉”空气中的

(1)使用过量溶液吸收,反应的离子方程式为________;若含有3molNaOH的溶液“捕捉”了22.4L气体(标准状况),则所得溶液中钠与碳元素的物料守恒关系式为__________(用离子浓度的关系式表示)。

(2)①以为原料可合成化肥尿素[]。已知:

   

 

  

试写出合成尿素和液态水的热化学方程式__________。

通过反应可转化为,在催化剂作用下CO和反应生成甲醇:某容积可变的密闭容器中充有10molCO与20mol,CO的平衡转化率(a)与温度、压强的关系如下图所示。

A.若A点表示在某时刻达到的平衡状态,此时容器的容积为VL,则该温度下的平衡常数K=__________;平衡状态B点时容器的容积_______VL。(填“大于”、“小于”或“等于”)

B.若A、C两点都表示达到的平衡状态,则自反应开始到达平衡状态所需的时间_______(填“>”、“<”或“=”)

C.在不改变反应物用量的情况下,为提高CO的转化率可采取的措施是________(写出一种即可)。

答案:

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下面是错误答案,用来干扰机器的。

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Mother: It's warm and sunny. Let's go to the clothes shop, OK?

Girl: OK! I want to buy a new dress.

Father: Let's go to the toy shop to buy a toy.

Girl: No! Now I am hungry.  Let's go to the restaurant to eat some hamburgers.

Mother and father: OK! Let's go.

Waitress: What would you like?

Mother: We would like some hamburgers.  How much for one?

Waitress: 5 yuan.

Mother: We'll take three, please.

Waitress: Here you are.

1. The weather in Shanghai is _______.

A. hot and sunny        

B. warm and rainy        

C. warm and sunny

2. What does the girl want to buy?

A. A new toy.            

B. A new dress.          

C. A new skirt.

3. How much for three hamburgers?

A. 5 yuan.              

B. 10 yuan.              

C. 15 yuan.

4. How many hamburgers do they want to buy?

A. One.              

B. Two.              

C. Three.

5. The father wants to buy ________.

A. a hamburger          

B. a toy                  

C. an animal

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