2012届江西省井冈山市高三上学期联考化学试卷

1.

钾是活泼的碱金属，钾和氧有氧化钾（K₂O）、过氧化钾（K₂O₂）和超氧化钾（KO₂）等多种化合物．
（1）钾和硝酸钾反应可制得氧化钾K＋KNO₃→K₂O＋N₂（未配平），每生成18.8gK₂O消耗的还原剂有______g
（2）超氧化钾和过氧化钾都能与二氧化碳反应均生成氧气和K₂CO₃，在医院、矿井、潜水、高空飞行中用作供氧剂．请尝试写出超氧化钾与二氧化碳反应的化学方程式___________________________________________,为了维持封闭环境气压稳定，可以使用超氧化钾和过氧化钾的混合物使吸收的CO₂与生成的O₂体积相同（同温同压）,则它们的物质的量之比为__________。
（3）KO₂加热至600℃部分分解得到固态混合物A。18.9g A充分吸收二氧化碳生成碳酸钾并产生氧气3.36L（标准状况），如果产物A只含有两种化合物，写出所有可能组成的化学式组合，并计算A中两种化合物的物质的量之比：___________________________。

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2.

下列各组离子遇到足量氨水，现象无明显不同的是（）

A．Mg²⁺和Al³⁺

B．Fe²⁺和Fe³⁺

C．Fe²⁺和Mg²⁺

D．Cu²⁺和Ba²⁺

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3.

The weather was fine last night. My friend named Steve and I decided to sleep in the open air. I found the sleeping bags under the bed in my room. I also packed some snacks. We could hardly wait for it to get dark. We opened our sleeping bags and put them on the grass in front of my house. Steve and I played some games, talked about something interesting and had a snack. In the end it got dark. We were just falling asleep when we heard something unusual.
“Maybe it is just a small animal,”I said. Steve said nothing, but I could feel he was frightened. After I looked around, I was sure it wasn't an animal. It was my little brother, Tommy.
“What are you doing here?”I asked. “You know, Tommy, you frightened us.”
“Sorry, Bill,” he said. “It's hot in the room. I want to sleep outside with you.”
“Well, OK,” I said. “Just come and lie down next to us.”
“Good night, Bill and Steve,” said Tommy. “And thanks.”

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4.

The weather was fine last night. My friend named Steve and I decided to sleep in the open air. I found the sleeping bags under the bed in my room. I also packed some snacks. We could hardly wait for it to get dark. We opened our sleeping bags and put them on the grass in front of my house. Steve and I played some games, talked about something interesting and had a snack. In the end it got dark. We were just falling asleep when we heard something unusual.
“Maybe it is just a small animal,”I said. Steve said nothing, but I could feel he was frightened. After I looked around, I was sure it wasn't an animal. It was my little brother, Tommy.
“What are you doing here?”I asked. “You know, Tommy, you frightened us.”
“Sorry, Bill,” he said. “It's hot in the room. I want to sleep outside with you.”
“Well, OK,” I said. “Just come and lie down next to us.”
“Good night, Bill and Steve,” said Tommy. “And thanks.”

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2012届江西省井冈山市高三上学期联考化学试卷

1.计算题(共1题)

2.单选题(共1题)

3.选择题(共2题)

【1】题量占比

【2】：难度分析