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用NaAc•3H2O晶体,2.0mol/LNaOH来配制PH为5.0的HAc-NaAc缓冲溶液1升,其正确的配制是()
A.将49克NaAc•3H2O放入少量水中溶解,再加入50ml2.0mol/LHAc溶液,用水稀释1升
B. 将98克NaAc•3H2O放入少量水中溶解,再加入50ml2.0mol/LHAc溶液,用水稀释1升
C. 将25克NaAc•3H2O放入少量水中溶解,再加入100ml2.0mol/LHAc溶液,用水稀释1升
D. 将49克NaAc•3H2O放入少量水中溶解,再加入100ml2.0mol/LHAc溶液,用水稀释1升
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_q_ckda.png)
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_panel_vip.png)
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_q_wyda.png)
- · 有5位网友选择 C,占比50%
- · 有2位网友选择 B,占比20%
- · 有2位网友选择 A,占比20%
- · 有1位网友选择 D,占比10%