大学分析化学实验报告，生理盐水中氯化钠含量的测定，结果保留几位有效数字 化学实验报告怎么写?关于生理盐水中氯化钠含量的测定
\u6c42\u6c89\u6dc0\u6ef4\u5b9a\u6cd5\u6d4b\u5b9a\u751f\u7406\u76d0\u6c34\u4e2d\u6c2f\u5316\u94a0\u542b\u91cf\u7684\u5b9e\u9a8c\u62a5\u544a\u751f\u7406\u76d0\u6c34\u4e2d\u6c2f\u5316\u94a0\u542b\u91cf\u7684\u6c89\u6dc0\u6ef4\u5b9a\u6d4b\u91cf\u6cd5
\u5b9e\u9a8c\u4e94\u751f\u7406\u76d0\u6c34\u4e2d\u6c2f\u5316\u94a0\u7684\u542b\u91cf\u6d4b\u5b9a_\u767e\u5ea6\u6587\u5e93
https://wenku.baidu.com/view/48622866783e0912a2162a48.html
\u5b9e\u9a8c\u4e94\u751f\u7406\u76d0\u6c34\u4e2d\u6c2f\u5316\u94a0\u7684\u542b\u91cf\u6d4b\u5b9a34
http://3y.uu456.com/bp_2toa03zxoe0cqsi0v4ug_1.html
\u5b9e\u9a8c\u4e94\u751f\u7406\u76d0\u6c34\u4e2d\u6c2f\u5316\u94a0\u7684\u542b\u91cf\u6d4b\u5b9a\uff1b\u4e00\u3001\u5b9e\u9a8c\u76ee\u7684\uff1b\u4e86\u89e3\uff1a\u6c89\u6dc0\u6ef4\u5b9a\u6cd5\u6d4b\u5b9a\u6c2f\u5316\u94a0\u542b\u91cf\u7684\u57fa\u672c\u8fc7\u7a0b\u548c\u7279\u70b9\uff1b\u7406\u89e3\uff1a\u6c89\u6dc0\u6ef4\u5b9a\u7684\u57fa\u672c\u539f\u7406\uff1b\u638c\u63e1\uff1a\u6c89\u6dc0\u6ef4\u5b9a\u6cd5\u7684\u57fa\u672c\u64cd\u4f5c\u6280\u672f\uff1b\u4e8c\u3001\u5b9e\u9a8c\u539f\u7406\uff1b1.\u83ab\u5c14\u6cd5\uff1b\u4e2d\u6027\u6216\u5f31\u78b1\u6027\u6eb6\u6db2\u4e2d\uff0c\u4ee5K2CrO4\u4e3a\u6307\u793a\u5242\uff0c\u7528A\uff1bAgCl\u7684\u6eb6\u89e3\u5ea6\uff1cAg2CrO4\u7684\u6eb6\u89e3\u5ea6\uff0c\u56e0\u6b64\u6eb6\uff1b\uff0d\u8fc7\u91cf\u7684AgNO3\u4e0eCrO42\u751f\u6210\u7816\u7ea2\u8272\u6c89\u6dc0\uff1b\uff0dAg++Cl\uff1b\uff0d2Ag++CrO
\u5b9e\u9a8c\u4e94 \u751f\u7406\u76d0\u6c34\u4e2d\u6c2f\u5316\u94a0\u7684\u542b\u91cf\u6d4b\u5b9a
\u4e00\u3001\u5b9e\u9a8c\u76ee\u7684
\u4e86\u89e3\uff1a\u6c89\u6dc0\u6ef4\u5b9a\u6cd5\u6d4b\u5b9a\u6c2f\u5316\u94a0\u542b\u91cf\u7684\u57fa\u672c\u8fc7\u7a0b\u548c\u7279\u70b9\u3002
\u7406\u89e3\uff1a\u6c89\u6dc0\u6ef4\u5b9a\u7684\u57fa\u672c\u539f\u7406\u3002
\u638c\u63e1\uff1a\u6c89\u6dc0\u6ef4\u5b9a\u6cd5\u7684\u57fa\u672c\u64cd\u4f5c\u6280\u672f\u3002
\u4e8c\u3001\u5b9e\u9a8c\u539f\u7406
1. \u83ab\u5c14\u6cd5
\u4e2d\u6027\u6216\u5f31\u78b1\u6027\u6eb6\u6db2\u4e2d\uff0c\u4ee5K2CrO4\u4e3a\u6307\u793a\u5242\uff0c\u7528AgNO3\u6807\u51c6\u6eb6\u6db2\u6ef4\u5b9a\u6c2f\u5316\u7269\u3002
AgCl\u7684\u6eb6\u89e3\u5ea6\uff1cAg2CrO4\u7684\u6eb6\u89e3\u5ea6\uff0c\u56e0\u6b64\u6eb6\u6db2\u4e2d\u9996\u5148\u6790\u51faAgCl\u6c89\u6dc0\uff0c\u5f53\u8fbe\u5230\u7ec8\u70b9\u540e\uff0c
\uff0d\u8fc7\u91cf\u7684AgNO3\u4e0eCrO42\u751f\u6210\u7816\u7ea2\u8272\u6c89\u6dc0\u3002
\uff0dAg++Cl
\uff0d2Ag++ CrO42Ag2CrO4
2. \u4f5b\u5c14\u54c8\u5fb7\u6cd5
\uff0d\u5728\u542bCl\u7684\u9178\u6027\u6eb6\u6db2\u4e2d\uff0c\u52a0\u5165\u4e00\u5b9a\u91cf\u8fc7\u91cf\u7684Ag+\u6807\u51c6\u6eb6\u6db2\uff0c\u5b9a\u91cf\u751f\u6210AgCl\u6c89\u6dc0\u540e\u8fc7\u91cf
\u7684Ag+\u4ee5\u94c1\u94f5\u77fe\u4e3a\u6307\u793a\u5242\uff0c\u7528NH4SCN\u6807\u51c6\u6eb6\u6db2\u8fdb\u884c\u8fd4\u6ef4\u5b9a\uff0c\u7531Fe(SCN)2+\u7edc\u79bb\u5b50\u7684\u7ea2\u8272\uff0c\u6307\u793a\u6ef4\u5b9a\u7ec8\u70b9\uff0c\u4e3b\u8981\u53cd\u5e94\u5982\u4e0b\uff1a
\uff0dAg++Cl?\uff1dAgCl \uff08\u767d\u8272\uff09\uff0cKap\uff1d1.8\u00d71010
\uff0d Ag++SCN?=AgSCN \uff08\u767d\u8272\uff09\uff0cKap\uff1d1.0\u00d71012
Fe3++ SCN?=Fe(SCN) 2+\uff08\u7ea2\u8272\uff09\uff0cKl\uff1d138
\uff0d\u6307\u793a\u5242\u7528\u91cf\u5927\u5c0f\u5bf9\u6ef4\u5b9a\u6709\u5f71\u54cd\uff0c\u4e00\u822c\u63a7\u5236Fe3+\u6d53\u5ea6\u4e3a0.015mol\u00b7L1\u4e3a\u5b9c\u3002
\uff0d\u6ef4\u5b9a\u65f6\uff0c\u63a7\u5236\u6c22\u79bb\u5b50\u6d53\u5ea6\u4e3a0.1\uff5e1 mol\u00b7L1\uff0c\u6fc0\u70c8\u6447\u52a8\u6eb6\u6db2\uff0c\u5e76\u52a0\u5165\u785d\u57fa\u82ef\uff08\u6709\u6bd2\uff01\uff09\u4fdd
\uff0d\u62a4AgCl\u6c89\u6dc0\uff0c\u4f7f\u5176\u4e0e\u6eb6\u6db2\u9694\u5f00\uff0c\u9632\u6b62AgCl\u6c89\u6dc0\u4e0eSCN\u53d1\u751f\u4ea4\u6362\u53cd\u5e94\u800c\u6d88\u8017\u6ef4\u5b9a\u5242\u3002
3. \u6cd5\u626c\u53f8\u6cd5
\uff0d\u7528AgNO3\u6ef4\u5b9aCl\uff0c\u4ee5\u8367\u5149\u9ec4\u4f5c\u6307\u793a\u5242\uff0c\u8367\u5149\u9ec4\u5148\u5728\u6eb6\u6db2\u4e2d\u89e3\u79bb\uff08pH\u4e3a7\uff5e10\uff09\uff1a
HFIn H++FIn?
FIn?\u5728\u6eb6\u6db2\u4e2d\u5448\u9ec4\u7eff\u8272\u3002\u5728\u5316\u5b66\u8ba1\u91cf\u70b9\u524dAgCl\u6c89\u6dc0\u5438\u9644Cl?\uff0c\u8fd9\u65f6FIn?\u4e0d\u88ab\u5438\u9644\uff0c\u6eb6\u6db2\u5448\u9ec4\u7eff\u8272\u3002\u5f53\u6ef4\u5b9a\u8fbe\u5230\u5316\u5b66\u8ba1\u91cf\u70b9\u65f6\uff0c\u7a0d\u8fc7\u91cf\u7684Ag+\u88abAgCl\u6c89\u6dc0\u5438\u9644\u5f62\u6210AgCl \u00b7Ag+\uff0c\u800cAgCl \u00b7Ag+\u5f3a\u70c8\u5438\u9644FIn?\uff0c\u4f7f\u5176\u7ed3\u6784\u53d1\u751f\u53d8\u5316\u800c\u5448\u7c89\u7ea2\u8272\uff0c\u4ee5\u6b64\u6307\u793a\u6ef4\u5b9a\u7ec8\u70b9\u3002
\uff0d\uff0dAgCl \u00b7Ag+ +FInAgCl \u00b7Ag+\u00b7 FIn?
\u9ec4\u7eff\u8272 \u7c89\u7ea2\u8272
\u4e09\u3001\u5b9e\u9a8c\u64cd\u4f5c\u6b65\u9aa4
1. \u83ab\u5c14\u6cd5
\u51c6\u786e\u91cf\u53d6\u751f\u7406\u76d0\u6c347.00mL\u4e8e250mL\u9525\u5f62\u74f6\u4e2d\uff0c\u5e73\u884c3\u4efd\uff0c\u5206\u522b\u52a0\u84b8\u998f\u6c3420mL\u548c2.5\uff05K2CrO4\u6307\u793a\u5242\u6eb6\u6db21mL\uff0c\u5728\u5145\u5206\u632f\u8361\u4e0b\uff0c\u7528AgNO3\u6807\u51c6\u6eb6\u6db2\u6ef4\u5b9a\u81f3\u6eb6\u6db2\u751f\u6210\u7816\u7ea2\u8272\u6c89\u6dc0\u3002\u8ba1\u7b97\u751f\u7406\u76d0\u6c34\u4e2d\u6c2f\u5316\u7269\u7684\u542b\u91cf\u3002
2. \u4f5b\u5c14\u54c8\u5fb7\u6cd5
(1) NH4SCN\u6807\u51c6\u6eb6\u6db2\u7684\u6807\u5b9a
\u51c6\u786e\u5438\u53d625.00mL AgNO3\u6807\u51c6\u6eb6\u6db2\u4e8e250mL\u9525\u5f62\u74f6\u4e2d\uff0c\u5e73\u884c3\u4efd\uff0c\u5206\u522b\u52a0\u516550\uff05HNO3\u6eb6\u6db25mL\uff0c\u94c1\u94f5\u77fe\u6307\u793a\u52421mL\uff0c\u7528NH4SCN\u6807\u51c6\u6eb6\u6db2\u6ef4\u5b9a\uff08\u6ef4\u5b9a\u65f6\u9700\u5267\u70c8\u6447\u52a8\u6eb6\u6db2\uff09\u81f3\u6eb6
\u6db2\u989c\u8272\u4e3a\u6de1\u7ea2\u8272\u7a33\u5b9a\u4e0d\u53d8\uff0c\u5373\u4e3a\u7ec8\u70b9\u3002\u8ba1\u7b97NH4SCN\u6807\u51c6\u6eb6\u6db2\u7684\u6d53\u5ea6\u3002
(2) \u8bd5\u6837\u5206\u6790
\u51c6\u786e\u5438\u53d6\u751f\u7406\u76d0\u6c34\u8bd5\u68373.00mL\u81f3250mL\u9525\u5f62\u74f6\u4e2d\uff0c\u5e73\u884c3\u4efd\u3002\u5206\u522b\u52a0\u6c3420mL\uff0c50\uff05HNO3\u6eb6\u6db25mL\uff0c\u7531\u6ef4\u5b9a\u7ba1\u52a0\u5165AgNO3\u6807\u51c6\u6eb6\u6db2\u81f3\u8fc7\u91cf20mL\uff08\u52a0\u5165AgNO3\u6807\u51c6\u6eb6\u6db2\u65f6\uff0c\u751f\u6210\u767d\u8272AgCl\u6c89\u6dc0\uff0c\u63a5\u8fd1\u8ba1\u91cf\u70b9\u65f6\uff0c\u6c2f\u5316\u94f6\u8981\u51dd\u805a\uff0c\u632f\u8361\u6eb6\u6db2\uff0c\u518d\u8ba9\u5176\u9759\u7f6e\u7247\u523b\uff0c\u4f7f\u6c89\u6dc0\u6c89\u964d\u3002\u7136\u540e\u52a0\u5165\u51e0\u6ef4AgNO3\u6807\u51c6\u6eb6\u6db2\u5230\u6e05\u6db2\u5c42\uff0c\u5982\u4e0d\u751f\u6210\u6c89\u6dc0\uff0c\u8bf4\u660eAgNO3\u5df2\u8fc7\u91cf\uff0c\u8fd9\u65f6\uff0c\u518d\u9002\u5f53\u8fc7\u91cf20mLAgNO3\u6807\u51c6\u6eb6\u6db2\u5373\u53ef\uff09\u3002\u7136\u540e\uff0c\u52a0\u5165\u785d\u57fa\u82ef2mL\uff0c\u7528\u6a61\u76ae\u585e\u585e\u4f4f\u74f6\u53e3\uff0c\u5267\u70c8\u632f\u8361\u534a\u5206\u949f\uff0c\u4f7fAgCl\u6c89\u6dc0\u8fdb\u5165\u785d\u57fa\u82ef\u5c42\u800c\u4e0e\u6eb6\u6db2\u9694\u5f00\u3002\u518d\u52a0\u5165\u94c1\u94f5\u77fe\u6307\u793a\u52421mL\uff0c\u7528NH4SCN\u6807\u51c6\u6eb6\u6db2\u6ef4\u5b9a\u81f3\u6eb6\u6db2\u5448\u73b0\u6de1\u7ea2\u8272\u7a33\u5b9a\u4e0d\u53d8\u65f6\uff0c\u5373\u4e3a\u7ec8\u70b9\uff0c\u8ba1\u7b97\u751f\u7406\u76d0\u6c34\u4e2d\u6c2f\u5316\u94a0\u7684\u542b\u91cf\u3002
3. \u6cd5\u626c\u53f8\u6cd5
\u51c6\u786e\u91cf\u53d6\u751f\u7406\u76d0\u6c347.00mL\u4e8e250mL\u9525\u5f62\u74f6\u4e2d\uff0c\u5e73\u884c3\u4efd\uff0c\u5206\u522b\u52a0\u84b8\u998f\u6c3420mL\uff0c\u8367\u5149\u9ec4\uff0d\u6dc0\u7c89\u6307\u793a\u5242\u6eb6\u6db25mL\uff0c\u5728\u5145\u5206\u632f\u8361\u4e0b\uff0c\u7528AgNO3\u6807\u51c6\u6eb6\u6db2\u6ef4\u5b9a\u81f3\u6eb6\u6db2\u7531\u9ec4\u7eff\u8272\u53d8\u4e3a\u7c89\u7ea2\u8272\u5373\u8fbe\u5230\u7ec8\u70b9\u3002\u8ba1\u7b97\u751f\u7406\u76d0\u6c34\u4e2d\u6c2f\u5316\u7269\u7684\u542b\u91cf\u3002
\u6ce8\u610f\uff0c\u5b9e\u9a8c\u540e\u8981\u56de\u6536\u6c2f\u5316\u94f6\u3002
\u628a\u8bd5\u9a8c\u7684\u8fc7\u7a0b\u978b\u4e0b\u6765\uff0c\u5305\u62ec\u8bd5\u9a8c\u76ee\u7684\uff0c\u8bd5\u9a8c\u51c6\u5907\uff0c\u8fc7\u7a0b\u7b49\u7136\u540e\u518d\u8ba1\u7b97
【】这个属于常量分析，结果，要保留4为有效数字。例如测定结果：38.89%四个有效数字，电子天平只能小数点后面四位。精确到
绛旓細銆愩戣繖涓睘浜庡父閲鍒嗘瀽锛缁撴灉锛岃淇濈暀4涓烘湁鏁堟暟瀛椼備緥濡傛祴瀹氱粨鏋滐細38.89
绛旓細2銆佹礂鑳冿細娲楄儍鏄不鐤楀父瑙勶紝鏈夊偓鍚愮蹇岃呮厧鐢ㄣ傜敤娓呮按銆鐢熺悊鐩愭按鎴栧叾浠栬兘涓拰姣掔墿鐨勬恫浣撴礂鑳冦傛礂鑳冩恫姣忔涓嶈秴杩500姣崌锛屼互鍏嶆妸姣掔墿鍐插叆灏忚偁锛屽弽澶嶆礂锛岀洿鍒版礂鍑烘恫鍑犳鏃犳瘨鐗╀负姝 3銆佹竻娉伙細鍙ｆ湇鎴栬儍绠￠佸叆澶у墏閲忕殑娉昏嵂锛屽纭吀闀併佺～閰搁挔绛夈 4銆佸簲鐢ㄨВ姣掋侀槻姣掑強鍏朵粬鎺掓瘨鑽墿銆 涓瘨鎬ユ晳瑕侀 锛堜竴锛...
绛旓細浜氭ユу拰鎱㈡ф瘨鎬э細瀹跺厰鍚稿叆0.01mg/L锛2灏忔椂/澶╋紝3涓湀锛屽紩璧蜂腑鏋㈢缁忕郴缁熺殑鏈鸿兘鏀瑰彉锛屾皵绠°佹敮姘旂绮樿啘鍒烘縺鐥囩姸锛屽ぇ鑴戠毊灞傚嚭鐜扮梾鐞嗘敼鍙樸傚皬榧犻暱鏈熸帴瑙︿綆娴撳害纭寲姘燂紝鏈夊皬姘旈亾鎹熷銆傛薄鏌撴潵婧愶細纭寲姘㈠緢灏戠敤浜庡伐涓氱敓浜т腑锛屼竴鑸綔涓烘煇浜鍖栧鍙嶅簲鍜岃泲鐧借川鑷劧鍒嗚В杩囩▼鐨勪骇鐗╀互鍙婃煇浜涘ぉ鐒剁墿鐨勬垚鍒嗗拰鏉傝川锛岃岀粡甯稿瓨...
