![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
下列各组混合溶液中,不具有缓冲作用的是()
A.100mL0.10mol/LKH2PO4溶液和50mL0.10mol/LNaOH溶液
B.100mL0.10mol/LHAc溶液和50mL0.10mol/LNaOH溶液
C.100mL0.10mol/LNaH2PO4溶液和50mL0.20mol/LNaOH溶液
D.100mL0.10mol/LKH2PO4溶液和50mL0.10mol/LHCl溶液
E.含有0.1mol/LNaOH和0.1mol/LKCl的溶液
F.0.1mol/LNH3·H2O溶液与0.1mol/LHCl溶液的等体积混合液
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)