强酸能和弱酸的盐发生复分解反应生成弱酸,酸性强弱顺序为H
2CO
3>
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/ac4bd11373f08202e4fc8a8d48fbfbedab641b11?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
>HCO
3-,
A.酸性H
2CO
3>
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/ac4bd11373f08202e4fc8a8d48fbfbedab641b11?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
>HCO
3-,所以苯酚钠和二氧化碳、水反应生成苯酚钠和碳酸氢钠,方程式为
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/71cf3bc79f3df8dc90a4c413ce11728b46102892?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,故A错误;
B.酸性H
2CO
3>
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/ac4bd11373f08202e4fc8a8d48fbfbedab641b11?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
>HCO
3-,所以苯酚钠和二氧化碳、水反应生成苯酚钠和碳酸氢钠,方程式为
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/71cf3bc79f3df8dc90a4c413ce11728b46102892?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,故B正确;
C.酸性
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/ac4bd11373f08202e4fc8a8d48fbfbedab641b11?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
>HCO
3-,所以苯酚和碳酸钠反应生成苯酚钠和碳酸氢钠,反应方程式为
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/43a7d933c895d143c7efafa170f082025baf0792?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,故C正确;
D.酸性
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/ac4bd11373f08202e4fc8a8d48fbfbedab641b11?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
>HCO
3-,所以苯酚和碳酸氢钠不反应,故D错误;
故选BC.