有常温下物质的量浓度均为0.1 mo/L的①氨水②NH4Cl溶液③Na2CO3溶液④NaHCO3溶液，下列说法正确的是
| A．4种溶液pH的大小顺序：①>④>③>② |
| B．等体积的①和②溶液混合后pH>7，c(NH3·H2O)>c( NH4＋) |
| C．溶液①、③由水电离产生的c(OH― )：①<③ |
| D．溶液③、④等体积混合后，溶液中c(CO32－)>c(HCO3) |
相关试题
If you leave the club, you will not be_____back in .
| A．received | B．admitted | C．turned | D．moved |
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free.
| A．other | B．others | C．one | D．ones ks |
粤公网安备 44130202000953号