如题所述
第1个回答 2019-10-02
令需要4mol/L的NaOH溶液amL,根据稀释定律,稀释前后溶质NaOH的物质的量不变,则:
0.5mol/L×500mL=4mol/L×amL,
解得a=62.5,
答:配制0.5mol/L的NaOH溶液500mL,需要4mol/L的NaOH溶液62.5mL.
0.5mol/L×500mL=4mol/L×amL,
解得a=62.5,
答:配制0.5mol/L的NaOH溶液500mL,需要4mol/L的NaOH溶液62.5mL.