在标定未知浓度的HCl溶液时，23.32mL HCl溶液恰可使0.2432g Na2CO3反应完全，试求HCl溶液的浓度。 标定hcl溶液时，为什么要选用甲基橙作
\u518d\u75280.2275\u514bNa2CO3\u6807\u5b9aHCL\u6eb6\u6db2\u65f6\uff0c\u6d88\u801722.35\u6beb\u5347\u672a\u77e5\u6d53\u5ea6\u7684HCL\u6eb6\u6db2\uff0c\u5219\u8be5HCL\u6eb6Na2CO3 + 2HCl = CO2\u2191+ 2NaCl+H2O
105.988 2
0.2275g 22.35 * 0.001 * c
\u8be5HCL\u6eb6\u6db2\u7684\u6469\u5c14\u6d53\u5ea6c=0.1921 mol/L
\u5982\u679c\u4e0d\u61c2\u8bf7\u8ffd\u95ee\uff0c\u5728\u7ebf\u4e3a\u4f60\u89e3\u7b54
\u3010\u5982\u679c\u5e2e\u5230\u4e86\u4f60\uff0c\u8bf7\u53ca\u65f6\u91c7\u7eb3\uff0c\u4f60\u7684\u6ee1\u610f\u91c7\u7eb3\uff0c\u6211\u7684\u65e0\u9650\u52a8\u529b\uff0c\u8c22\u8c22\u914d\u5408 (*^_^*) \u3011
\u9009\u62e9\u6307\u793a\u5242\u6839\u636e\u9178\u78b1\u53cd\u5e94\u6ef4\u5b9a\u7a81\u8dc3\u8303\u56f4\u9009\u6307\u793a\u5242\uff0c\u53d8\u8272\u8303\u56f4\u5168\u90e8\u6216\u90e8\u4f4d\u4e8e\u7a81\u8dc3\u8303\u56f4\u5185\uff0c\u6ef4\u5b9a\u9009\u7528\u8be5\u6307\u793a\u52420.1mol/LHCl\u4e0e0.1mol/LNaOH\u53cd\u5e94\u7a81\u8dc3\u8303\u56f44.3~9.7\uff0c\u915a\u915e\u53d8\u8272\u8303\u56f48~10\uff0c\u7532\u57fa\u6a59\u53d8\u8272\u8303\u56f43.1~4.4\uff0c\u7406\u8bba\u5747\u7528\u4f5c\u6307\u793a\u5242
\u76d0\u9178\u6ef4\u5b9a\u6c22\u6c27\u5316\u94a0\uff0c\u82e5\u9009\u7528\u7532\u57fa\u6a59\u7ec8\u70b9\u7531\u9ec4\u8272\u53d8\u6a59\u8272\uff08\u7531\u6d45\u6df1\uff09\uff1b\u9009\u915a\u915e\u7ec8\u70b9\u7531\u7ea2\u8272\u53d8\u8272\uff08\u7531\u6df1\u6d45\uff09\u901a\u773c\u775b\u4e8e\u989c\u8272\u7531\u6d45\u6df1\u53d8\u5316\u66f4\u654f\u9510\uff0c\u6240\u4e8c\u8005\u76f8\u6bd4\u9009\u7532\u57fa\u6a59
\u6c22\u6c27\u5316\u94a0\u6ef4\u5b9a\u76d0\u9178\uff0c\u82e5\u9009\u7528\u7532\u57fa\u6a59\u7ec8\u70b9\u7531\u7ea2\u8272\u53d8\u6a59\u8272\uff08\u7531\u6df1\u6d45\uff09\uff1b\u9009\u915a\u915e\u7ec8\u70b9\u7531\u8272\u53d8\u6d45\u7c89\u8272\uff08\u7531\u6d45\u6df1\uff09\uff0c\u4e8c\u8005\u76f8\u6bd4\u9009\u915a\u915e
绛旓細1銆佹阿姘у寲閽犳憾娑叉爣瀹氾細H2C204+2NaOH=Na2C204+2H20鍙嶅簲杈惧埌缁堢偣鏃讹紝婧舵恫鍛堝急纰辨э紝鐢ㄩ厷閰炰綔鎸囩ず鍓傘傦紙骞宠婊村畾涓ゆ锛2銆鐩愰吀婧舵恫鏍囧畾锛欻CI+NaOH=NaCl+H2O 浜斻佹暟鎹垎鏋愶細1銆佹阿姘у寲閽犳憾娑叉祿搴︾殑鏍囧畾锛氶吀纰辨淮瀹氬疄楠屾姤鍛 2銆鐩愰吀婧舵恫娴撳害鐨勬爣瀹锛氶吀纰辨淮瀹氬疄楠屾姤鍛 鍏佸疄楠岀粨鏋滐細1銆佹祴寰楁阿姘у寲閽犳憾娑茬殑...
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