将20ml,0.5mol/L的NaOH溶液加水稀释到500ml,稀释溶液中NaOH的物质的量浓度多少?

问题描述:

将20ml,0.5mol/L的NaOH溶液加水稀释到500ml,稀释溶液中NaOH的物质的量浓度多少?

n(NaOH)=0.02*0.5=0.01mol
c(NaOH)=0.01/0.5=0.02mol/L