250mL=0.25L,
0.1000mol/L的溶液0.25L中含溶质的物质的量为0.1000mol/L*0.25L=0.025mol,
所以应称取NaCl的质量为
0.025mol*58.44g/mol=1.461g
答:称取NaCl1.461g,用250mL容量瓶配成溶液.
250mL=0.25L,
0.1000mol/L的溶液0.25L中含溶质的物质的量为0.1000mol/L*0.25L=0.025mol,
所以应称取NaCl的质量为
0.025mol*58.44g/mol=1.461g
答:称取NaCl1.461g,用250mL容量瓶配成溶液.