Question

关于化学物质量浓度的题50克物质的量浓度为C1的浓硫酸(溶质的质量分数为W1)与V毫升水混合,得到物质的两浓度为C2的稀

Answer 1

1.C1=1000d1W1/98

C2=1000d2W2/98

C1/C2 = 2d1/d2

d1>d2

C1>2C2

50W1=(50+V)W2

V=50ml

2.C1=1000d1W1/98

C2=1000d2W2/98

2/1 =d1W1/d2W2

W1/2W2 =d2/d1

d1>d2

W1