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zhouxu1986

铁虫 (正式写手)

[求助] 相律的问题

亲爱的朋友:
    考研复习,碰到一题,跟书内答案思路不一,请指教。
将AlCl3溶于水中全部水解生成AlOH3沉淀此系统自由度数f,独立组分数,各是多少?
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changyf

铁杆木虫 (职业作家)

【答案】应助回帖

感谢参与,应助指数 +1
zhouxu1986(金币+10): ★★★很有帮助 2012-01-04 22:33:11
我也遇到过同样的问题,独立组分数是3,分别是氯化铝,水,氢氧化铝,因为氯化铝水解产生四种物质,再加上R=1,所以独立组分数S=3。如果忽略压力的影响,用条件自由度的话,自由度F=S-P+1=3-2+1=2;如果考虑压力的话自由度F=S-P+2=3。
2楼2012-01-03 21:45:42
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