![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-53/ti_inject-812ce.png)
Tahoma;mso-hansi-font-family:Tahoma;mso-bidi-font-weight:bold">精密称取 0.2036 g Tahoma;mso-bidi-font-weight:bold">的基准物质 Na 2 CO 3 Tahoma;mso-bidi-font-weight:bold">,溶解后,以甲基橙为指示剂,用 HCl mso-ascii-font-family:Tahoma;mso-hansi-font-family:Tahoma;mso-bidi-font-weight: bold">标准溶液滴定至终点,用去 36.06 mL Tahoma;mso-hansi-font-family:Tahoma;mso-bidi-font-weight:bold">反应式为: 2HCl+Na 2 CO 3 =2NaCl+2CO 2 +H 2 O "Times New Roman";mso-bidi-font-weight:bold">计算 HCl mso-bidi-font-weight:bold">的浓度 C HCl bold">选用公式 mso-bidi-font-weight:bold">计算,表示公式中不正确的量是: