题目

请教一道英文的化学题.
At room temperature,solid lithium phosphate (Li3PO4) dissolves in water up to a concentration of 0.04 g/dL.Once this concentration is attained the aqueous solution is said to be saturated and no further solid will dissolve.Which of the following concentrations of lithium phosphate are attainable in aqueous solution at room temperature?
(Click on the drop-boxes and select "yes" or "no".) ：
1).400 /cL
2).4.0E+06 pg/uL
3).3.0 mg/dL
4).5.0E+07 ng/L
5).0.00050 g/mL
1).是400ug/cL

提问时间：2021-10-14

答案

已知室温下的Li3P04溶解度0.04g/L=40mg/mL,达到即饱和.问以下哪个浓度的可以溶解在室温下而不析出晶体.1.0.4mg/0.01L=40mg/L 2.4000000pg=4000ng/uL=4000ug/mL=4000mg/L 3.3mg/dL=3mg/0.1L=30mg/L 4.50 000 000ng/L=50mg/L 5.0.0005g/mL=0.5g/mL=500mg/mL 13可溶而没有固体析出