用标准的NaOH溶液滴定未知浓度的盐酸，选用酚酞作为指示剂
\u7528NaOH\u6807\u51c6\u6db2\u6ef4\u5b9a\u672a\u77e5\u6d53\u5ea6\u7684\u76d0\u9178\uff0c\u9009\u7528\u915a\u915e\u4f5c\u4e3a\u6307\u793a\u5242\uff0c\u4e0b\u5217\u64cd\u4f5c\uff08\u5176\u4ed6\u64cd\u4f5c\u6b63\u786e\uff09\u4f1a\u9020\u6210\u6d4b\u5b9a\u7ed3\u679c\u504f\u9ad8\u7684\u662fA\u3001\u914d\u5236\u6807\u51c6\u6eb6\u6db2\u7684NaOH\u4e2d\u6df7\u6709Na2CO3\u6742\u8d28\uff0c\u4ee5\u915a\u915e\u4e3a\u6307\u793a\u5242\u65f6\u7b49\u8d28\u91cf\u7684\u6c22\u6c27\u5316\u94a0\u548cNa2CO3\u6d88\u8017\u7684\u9178\u524d\u8005\u5927\uff0c\u6240\u4ee5\u6807\u51c6\u6eb6\u6db2\u7684\u6c22\u6c27\u5316\u94a0\u4e2d\u6df7\u6709Na2CO3\u6742\u8d28\u65f6\u9020\u6210V\uff08\u78b1\uff09\u504f\u5927\uff0c\u6839\u636ec\uff08\u9178\uff09=c(\u78b1)\u00d7V(\u78b1)V(\u9178)\u5206\u6790\uff0c\u53ef\u77e5c\uff08\u9178\uff09\u504f\u5927\uff0c\u6545A\u6b63\u786e\uff1bB\u3001\u6ef4\u5b9a\u7ec8\u70b9\u8bfb\u6570\u65f6\uff0c\u4fef\u89c6\u6ef4\u5b9a\u7ba1\u7684\u523b\u5ea6\uff0c\u9020\u6210V\uff08\u78b1\uff09\u504f\u5c0f\uff0c\u6839\u636ec\uff08\u9178\uff09=c(\u78b1)\u00d7V(\u78b1)V(\u9178)\uff0c\u53ef\u77e5c\uff08\u9178\uff09\u504f\u5c0f\uff0c\u6545B\u9519\u8bef\uff1bC\u3001\u76db\u88c5\u672a\u77e5\u6db2\u7684\u9525\u5f62\u74f6\u7528\u84b8\u998f\u6c34\u6d17\u8fc7\uff0c\u672a\u7528\u672a\u77e5\u6db2\u6da6\u6d17\uff0c\u5f85\u6d4b\u6db2\u7684\u7269\u8d28\u7684\u91cf\u4e0d\u53d8\uff0cV\uff08\u78b1\uff09\u4e0d\u53d8\uff0c\u6839\u636ec\uff08\u9178\uff09=c(\u78b1)\u00d7V(\u78b1)V(\u9178)\uff0c\u53ef\u77e5c\uff08\u9178\uff09\u4e0d\u53d8\uff0c\u6545C\u9519\u8bef\uff1bD\u3001\u9178\u5f0f\u6ef4\u5b9a\u7ba1\u4f7f\u7528\u524d\uff0c\u6c34\u6d17\u540e\u672a\u7528\u5f85\u6d4b\u76d0\u9178\u6da6\u6d17\uff0c\u5f85\u6d4b\u6db2\u7684\u7269\u8d28\u7684\u91cf\u504f\u5c0f\uff0c\u9020\u6210V\uff08\u78b1\uff09\u504f\u5c0f\uff0c\u6839\u636ec\uff08\u9178\uff09=c(\u78b1)\u00d7V(\u78b1)V(\u9178)\uff0c\u53ef\u77e5c\uff08\u9178\uff09\u504f\u5c0f\uff0c\u6545D\u9519\u8bef\uff1b\u6545\u9009\uff1aA\uff1b
A\u3001\u78b1\u5f0f\u6ef4\u5b9a\u7ba1\u672a\u6da6\u6d17\u5c31\u88c5\u6807\u51c6\u6db2\u6ef4\u5b9a\uff0c\u9020\u6210\u6d88\u8017\u7684V\uff08\u6807\u51c6\uff09\u504f\u5927\uff0c\u6839\u636ec\uff08\u5f85\u6d4b\uff09=c(\u6807\u51c6)\u00d7V(\u6807\u51c6)V(\u5f85\u6d4b)\uff0c\u53ef\u77e5C\uff08\u5f85\u6d4b\uff09\u504f\u5927\uff0c\u6545A\u6b63\u786e\uff1bB\u3001\u6ef4\u5b9a\u7ec8\u70b9\u8bfb\u6570\u65f6\uff0c\u4fef\u89c6\u6ef4\u5b9a\u7ba1\u7684\u523b\u5ea6\uff0c\u5176\u5b83\u64cd\u4f5c\u5747\u6b63\u786e\uff0c\u5bfc\u81f4V\uff08\u6807\u51c6\uff09\u504f\u5c0f\uff0c\u7ed3\u679c\u504f\u4f4e\uff0c\u6545B\u9519\u8bef\uff1bC\u3001\u6ef4\u5b9a\u8fc7\u7a0b\u4e2d\u632f\u8361\u9525\u5f62\u74f6\u6709\u5c11\u8bb8\u76d0\u9178\u6e85\u51fa\uff0c\u9020\u6210\u6d88\u8017\u7684V\uff08\u6807\u51c6\uff09\u504f\u5c0f\uff0c\u6839\u636ec\uff08\u5f85\u6d4b\uff09=c(\u6807\u51c6)\u00d7V(\u6807\u51c6)V(\u5f85\u6d4b)\uff0c\u53ef\u77e5C\uff08\u5f85\u6d4b\uff09\u504f\u5c0f\uff0c\u6545C\u9519\u8bef\uff1bD\u3001\u76db\u88c5\u672a\u77e5\u6db2\u7684\u9525\u5f62\u74f6\u7528\u84b8\u998f\u6c34\u6d17\u8fc7\uff0c\u672a\u7528\u5f85\u6d4b\u6db2\u6da6\u6d17\uff0c\u5f85\u6d4b\u6db2\u7684\u7269\u8d28\u7684\u91cf\u4e0d\u53d8\uff0c\u6807\u51c6\u6db2\u7684\u4f53\u79ef\u4e0d\u53d8\uff0c\u7ed3\u679c\u4e0d\u53d8\uff0c\u6545D\u9519\u8bef\uff1b\u6545\u9009\uff1aA\uff0e
因为1mol Na2CO3与过量盐酸反应时耗2mol盐酸,所以耗酸多，用的NaOH就少，所以偏低还有问题就找我，我专业是化学 呵呵！！
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