作者dougho (Doug)
看板Chemistry
标题[问题]molarity跟molality的问题
时间Fri Dec 2 06:41:27 2005
问题如下:
1) Concentrated nitric acid is a solution that is 70% HNO3, by mass. The density of this acid is 1.42 g/cm3. What is the molarity of this acid?
2) What is the molality of a solution of 50.0 g of propanol (CH3CH2CH2OH) in 152 mL water, if the density of water is 1.0 g/mL?
有没有大大可以教我这两题要怎麽做阿~?
也可以跟我解释一下molarity跟molality的不同吗?
搞很久都搞不懂><
谢谢大大喔~^^
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1F:推 chiehly:molarity是体积莫耳浓度,molality是重量莫耳浓度 12/02 07:37
2F:→ chiehly:体积莫耳浓度:溶质mol/溶液L,重量莫耳浓度:溶质mol/溶剂kg 12/02 07:40