对于0.1mol•L-1 NH4Cl溶液，正确的是（ ）
A．升高温度，溶液pH升高
B．通入少量HCl，c（NH4+）和c（Cl-）均增大
C．c（NH4+）+c（OH-）=c（Cl-）+c（H+）
D．c（Cl-）＞c（H+）＞c（NH4+）＞c（OH-）
A．升高温度促进水解，NH4Cl水解，氢离子浓度增大，溶液pH降低，故A错误；
B．氢离子抑制氯化铵的水解，铵根浓度增大，加入了氯化氢，氯离子浓度增大，故B正确；
C．氯化铵不水解，铵根浓度与氢氧根相等，铵根水解，铵根浓度减少，氢离子浓度增大，故C错误；
D．水解程度很微弱，氢离子浓度小于铵根浓度，故D错误．
故选B．
Li Ming (L) and John (J) have just finished swimming. L: How nice and cool the water is! But I’m feeling a bit hungry now. 小题1: J: Sounds good. L: 小题2: J: Yes, there is. L: 小题3: J: It’s only five minutes’ walk. Let’s go. L: Yeah. Oh, I almost forgot my CD player. J: Oh, it’s over there. 小题4: L: Pop music. I often listen to it when I’m not busy. How about you? J: Light music. I think it can relax myself. 小题5: L: Sure. J: OK. I can lend you some CDs. I’ll bring them to school tomorrow. L: Thanks.
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