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6-16 工业上通常用电解熔融的LiCl(s)的方法制备金属锂Li(s)。为了节约能量,常常加入一定量的KCl(s)。为了获得精确制备Li(s)的方法,研究了LiCl-KCl体系的,结果如下:LiCl(s)、KCl(s)的熔点分别是878K、1048K,LiCl(A)-KCl(B)二组分体系的低共熔点为(xw,B=0.50, 629K),另外在曲线实验中获得在723K时组分xw,B=0.43的熔化物析出LiCl(s),组分xw,B=0.63的熔化物析出KCl(s)。 (1) 请绘制出LiCl(A)-KCl(B)二组分体系的低共熔; (2) 加入一定量KCl有利于节能的原因是什么? (3) 电解槽的操作温度应高于那个温度?为什么? (4) 加入KCl(s)的质量分数应控制在哪个范围?
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The elephant is the biggest animal In the world.
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