二战期间，为躲避纳粹的迫害，丹麦著名的科学家玻尔，将他钟爱的金制诺贝尔奖章用王水溶解成“金溶液”：Au+HNO3+3HCl=AuCl3+NO↑+2H2O；AuCl3+HCl=HAuCl4（四氯合金酸），纳粹分子对这种溶液笨得视而不见、毫无所知．战争结束后，玻尔用四氯合金酸在加热的条件下分解产生单质金、氯气（Cl2）和大量的酸雾，通过该反应，炼出黄金并铸出更加灿烂夺目的奖章．根据以上信息，王水是______（填：“纯净物”或“混合物”）试写出波尔用四氯合金酸获得金的化学方程式：______．
从金在王水中发生的反应可知，王水是浓盐酸和浓硝酸组成的物质，属于混合物，故答案为：混合物；
根据质量守恒定律可知，反应前后的原子个数和原子种类不变，所以酸雾是氯化氢气体，
四氯合金酸在加热的条件下会生成氯化氢、金、和氯气，故答案为：2HAuCl4
2HCl↑+2Cl2↑+2Au △ .
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| It is evening. An old cock is sitting in a tall tree. A fox comes to the tree and 1 at the cock. “Hello, Mr. Cock. I have some 2 news for you. ”says the fox. “Oh?”says the cock. “What is it?”“All the animals are good friends now. Let’s 3 friends, too. Please come 4 and play with me. ”“Fine!”says the cock. “I’m very glad to hear that”. Then he looks up. “Look! There is something over there. ”“ 5 are you looking at?”asks the fox. “Oh, I see some animals over there. They’re 6 this way. ”“Animals?”“Yes, Oh, they’re dogs. ”“What? Dogs!”asks the fox. “Well…well, I 7 go now, Goodbye. ”“Wait, Mr. Fox. ”says the cock. “ 8 go, They are only dogs. And dogs are our friends now. ”“Yes, I know, but 9 don’t know that. ”“I see, I see, ”says the cock. He 10 and goes to sleep in the tree. Do you know why? Foxes are afraid(怕) of dogs. | ||||
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