A Survey of Group Members
Name
Age
Favorite subject
Hobby
Mary
14
science
singing
John
15
history
swimming
Susan
physics
tennis
一How was Lily's birthday party?
一
实验编号
HA物质的量浓度(mol•L﹣1)
NaOH物质的量浓度(mol•L﹣1)
混合溶液的 pH
甲
0.2
pH=a
乙
c
pH=7
丙
0.1
pH>7
丁
pH=9