下列溶液中Cl－浓度最大的是
A．200mL 2mol/L MgCl2溶液
B．1000mL 2.5mol/L NaCl溶液
C．300mL 5mol/L KClO3溶液
D．250mL 1mol/L AlCl3溶液
答案：A
A．Cl－浓度是4 mol/L
B Cl－浓度是2.5mol/L
C 电离不出Cl－
D．Cl－浓度是3 mol/L
故Cl－浓度最大的是A
| 根据对话内容，从方框内的选项中选出能填入空白处的选项，有两项多余 | |
A: Mom, look at my sweater. It's small. And it's old, too. B: Yes, it is 1 . A: Thank you. Can I go with you? B: Come on. ( In the store ) C: 2 B: Yes, please. I want a sweater for my son. C: 3 A: I kike blue. C: Here is a blue one. Do you like it ? A: It's nice. 4 B: I think it's small, too. C: This one is big, And it's blue. A: It's nice. I like it. B: 5 C: It's 76 yuan. B: I'll take it. Thank you. C: You're welcome. 1._______ 2._______ 3._______ 4._______ 5._______ |