将10ml 10mol/L的硫酸加水稀释到100ml,取稀释液10ml用5mol/L NaOH溶液中和,需要NaOH溶液多少毫升(计算
问题描述:
将10ml 10mol/L的硫酸加水稀释到100ml,取稀释液10ml用5mol/L NaOH溶液中和,需要NaOH溶液多少毫升(计算
答
10ml 10mol/L的硫酸中,n(H2SO4)=0.010×10=0.1mol
稀释液10ml中,n(H2SO4)=0.1×(10/100)=0.01mol
H2SO4+2NaOH==Na2SO4+2H2O
1 2
0.01 5VV=0.004L
需要NaOH溶液4mL