49L |
24.5L/mol |
②HCl的质量为2mol×36.5g/mol=73g,故答案为:73;
③127mL水的质量为127mL×1g/mL=127g,溶液的质量分数为
73g |
127g+73g |
1000ρω |
M |
1000×1.2×36.5% |
36.5 |
④根据稀释定律,稀释前后HCl的物质的量相等,则稀释后溶液的体积为
20mL×12mol/L |
2mol/L |
49L |
24.5L/mol |
73g |
127g+73g |
1000ρω |
M |
1000×1.2×36.5% |
36.5 |
20mL×12mol/L |
2mol/L |