All of the following mixtures can function as a buffer solution, except
A: equal volumes of 0.10 mol/L HAc and 0.10 mol/L NaAc
B: 100 mL of 0.10 mol/L HAc and 50 mL of 0.10 mol/L NaOH
C: 100 mL of 0.10 mol/L HAc and 100 mL of 0.10 mol/L NaOH
D: 50 mL of 0.10 mol/L NH3 and 25 mL of 0.10 mol/L HC1
A: equal volumes of 0.10 mol/L HAc and 0.10 mol/L NaAc
B: 100 mL of 0.10 mol/L HAc and 50 mL of 0.10 mol/L NaOH
C: 100 mL of 0.10 mol/L HAc and 100 mL of 0.10 mol/L NaOH
D: 50 mL of 0.10 mol/L NH3 and 25 mL of 0.10 mol/L HC1
举一反三
- Which of the following mixtures can work as a buffer and has the strongest buffer capacity? A: 200 mL of 0.20 mol/L [img=77x22]1803a221d13ee32.png[/img] and 100 mL of 0.20 mol/L NaOH B: 200 mL of 0.10 mol/L [img=77x22]1803a221d13ee32.png[/img] and 200 mL of 0.10 mol/L NaOH C: 200 mL of 0.10 mol/L [img=77x22]1803a221d13ee32.png[/img] and 100 mL of 0.10 mol/L NaOH D: 200 mL of 0.10 mol/L [img=36x22]1803a221e9e372e.png[/img] and 200 mL of 0.10 mol/L HC1
- 下列三种溶液 pH 值的大小关系是:a. 0.10 mol/L HCl - 0.20 mol/L NaAc;b. 0.20 mol/L HAc - 0.10 mol/L NaOH;c. 0.10 mol/L HAc - 0.10 mol/L NaAc
- 在110 mL浓度为0.10 mol/L的醋酸溶液中,加入10 mL浓度为0.10 mol/L的NaOH溶液,所得混合溶液的pH为______ 。已知pKa(HAc) = 4.75。
- 下列溶液稀释 10 倍时,pH 值改变最小的是 A: 0.10 mol/L HAc 溶液 B: 0.10 mol/L NH4Ac 溶液 C: 0.10 mol/L NaAc 溶液 D: 0.10 mol/L NH4Cl 溶液
- 下列各组混合溶液中,不具有缓冲作用的是() A: 100 mL 0.10 mol·L-1 KH2PO4溶液和50<br/>mL 0.10mol·L-1 NaOH溶液 B: 100 mL 0.10 mol·L-1 HAc溶液和50<br/>mL 0.10mol·L-1 NaOH溶液 C: 100 mL 0.10 mol·L-1 NaH2PO4溶液和50<br/>mL 0.20mol·L-1 NaOH溶液 D: 100 mL 0.10 mol·L-1 KH2PO4溶液和50<br/>mL 0.10mol·L-1 HCl溶液