某碱性溶液中只有NH4＋、Cl－、H＋、OH－四种离子。则下列描述正确的是
| A．该溶液可由等物质的量浓度、等体积的氨水溶液和盐酸溶液混合而成 |
| B．该溶液可由pH＝2的HCl与pH＝12的氨水等体积混合而成 |
| C．加入适量的盐酸，溶液中离子浓度为c(Cl－)＞c(NH4＋)＞c(OH－)＞c(H＋) |
| D．加入适量CH3COOH溶液，c(NH4＋)一定大于c(Cl－)、c(CH3COO－)之和 |
相关试题
All the dishes in this menu, ______ otherwise stated, will serve two to three people. 
| A．as | B．if | C．though | D．unless |
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| A．most | B．more | C．less | D．little |
Progress______ so far very good and we are sure that the work will be finished on time.
| A．was | B．had been | C．has been | D．will be |
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| A．someone | B．anyone | C．not one | D．no one |
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