实验室中配制1mol/L稀硫酸标准溶液．然后用其滴定某未知浓度少m七OH溶液．下列有关说法中不正确少是（
\uff081\uff09\u67d0\u7814\u7a76\u6027\u5b66\u4e60\u5c0f\u7ec4\u5728\u5b9e\u9a8c\u5ba4\u4e2d\u914d\u52361mol/L\u7684\u7a00\u786b\u9178\u6807\u51c6\u6eb6\u6db2\uff0c\u7136\u540e\u7528\u5176\u6ef4\u5b9a\u67d0\u672a\u77e5\u6d53\u5ea6\u7684NaOH\u6eb6\u6db2\uff0e\u4e0b\u5217\uff081\uff09A\uff0e\u5b9e\u9a8c\u4e2d\u6240\u7528\u5230\u7684\u6ef4\u5b9a\u7ba1\u3001\u5bb9\u91cf\u74f6\uff0c\u5728\u4f7f\u7528\u524d\u5747\u9700\u8981\u68c0\u6f0f\uff0c\u5426\u5219\u4f1a\u9020\u6210\u8bef\u5dee\uff0c\u6545A\u6b63\u786e\uff1bB\uff0e\u5982\u679c\u5b9e\u9a8c\u4e2d\u9700\u752860mL \u7684\u7a00\u786b\u9178\u6807\u51c6\u6eb6\u6db2\uff0c\u914d\u5236\u65f6\u5e94\u9009\u7528100mL\u5bb9\u91cf\u74f6\uff0c\u5bb9\u91cf\u74f6\u7684\u89c4\u683c\u670950mL\u3001100mL\u7b49\u5bb9\u91cf\u74f6\uff0c\u5e94\u9009\u62e9\u7a0d\u5927\u4e8e\u6216\u7b49\u4e8e\u914d\u5236\u6eb6\u6db2\u4f53\u79ef\u7684\u5bb9\u91cf\u74f6\uff0c\u6545B\u6b63\u786e\uff1bC\uff0e\u5bb9\u91cf\u74f6\u4e2d\u542b\u6709\u5c11\u91cf\u84b8\u998f\u6c34\uff0c\u4e0d\u5f71\u54cd\u6eb6\u8d28\u7684\u7269\u8d28\u7684\u91cf\u548c\u6eb6\u6db2\u7684\u4f53\u79ef\uff0c\u6240\u4ee5\u4e0d\u4f1a\u5bfc\u81f4\u6240\u914d\u6807\u51c6\u6eb6\u6db2\u7684\u6d53\u5ea6\u504f\u5c0f\uff0c\u6545C\u9519\u8bef\uff1bD\uff0e\u9178\u5f0f\u6ef4\u5b9a\u7ba1\u7528\u84b8\u998f\u6c34\u6d17\u6da4\u540e\uff0c\u5373\u88c5\u5165\u6807\u51c6\u6d53\u5ea6\u7684\u7a00\u786b\u9178\uff0c\u5bfc\u81f4\u7a00\u786b\u9178\u7684\u6d53\u5ea6\u504f\u5c0f\uff0c\u6240\u7528\u7a00\u786b\u9178\u7684\u4f53\u79ef\u504f\u5927\uff0c\u6240\u4ee5\u6d4b\u5f97\u7684NaOH\u6eb6\u6db2\u7684\u6d53\u5ea6\u5c06\u504f\u5927\uff0c\u6545D\u6b63\u786e\uff1bE\uff0e\u914d\u5236\u6eb6\u6db2\u65f6\uff0c\u82e5\u5728\u6700\u540e\u4e00\u6b21\u8bfb\u6570\u65f6\u4fef\u89c6\u8bfb\u6570\uff0c\u5bfc\u81f4\u6eb6\u6db2\u7684\u4f53\u79ef\u504f\u5c0f\u6d53\u5ea6\u504f\u5927\uff0c\u6240\u7528\u9178\u7684\u4f53\u79ef\u504f\u5c0f\uff0c\u6545\u5bfc\u81f4\u5b9e\u9a8c\u7ed3\u679c\u504f\u5c0f\uff0c\u6545E\u9519\u8bef\uff1bF\uff0e\u4e2d\u548c\u6ef4\u5b9a\u65f6\uff0c\u82e5\u5728\u6700\u540e\u4e00\u6b21\u8bfb\u6570\u65f6\u4fef\u89c6\u8bfb\u6570\uff0c\u5bfc\u81f4\u6240\u7528\u9178\u7684\u4f53\u79ef\u504f\u5c0f\uff0c\u6545\u5bfc\u81f4\u5b9e\u9a8c\u7ed3\u679c\u504f\u5c0f\uff0c\u6545F\u9519\u8bef\uff1b\u6545\u9009ABD\uff1b\uff082\uff09\u2460c\uff08OH-\uff09/c\uff08H+\uff09=1\u00d710-8\uff0cc\uff08OH-\uff09\u00d7c\uff08H+\uff09=1.0\u00d710-14\uff0c\u5219c\uff08H+\uff09=10-3mol?L-1\uff0c\u6240\u4ee5\u6eb6\u6db2\u7684pH=3\uff1b\u6c22\u79bb\u5b50\u6d53\u5ea6\u5c0f\u4e8e\u9178\u7684\u6d53\u5ea6\uff0c\u6240\u4ee5\u8be5\u9178\u662f\u5f31\u9178\uff0c\u8be5\u9178\uff08HA\uff09\u4e0eNaOH\u6eb6\u6db2\u53cd\u5e94\u7684\u79bb\u5b50\u65b9\u7a0b\u5f0f\u4e3a\uff1aHA+OH-\u2550A-+H2O\uff0c\u6545\u7b54\u6848\u4e3a\uff1a3\uff1bHA+OH-\u2550A-+H2O\uff1b \u2461pH=11\u7684NaOH\u6eb6\u6db2\u4e2dc\uff08OH-\uff09=10-3mol?L-1\uff0cHA\u662f\u5f31\u9178\uff0c\u9178\u7684\u6d53\u5ea6\u8fdc\u8fdc\u5927\u4e8e\u6c22\u79bb\u5b50\u6d53\u5ea6\uff0c\u6240\u4ee5pH=3\u7684HA\u4e0epH=11\u7684NaOH\u6eb6\u6db2\u7b49\u4f53\u79ef\u6df7\u5408\u540e\uff0c\u6eb6\u6db2\u4e2d\u7684\u6eb6\u8d28\u662f\u9178\u548c\u76d0\uff0c\u6eb6\u6db2\u5448\u9178\u6027\uff0c\u6240\u4ee5\u6eb6\u6db2\u4e2d\u6c22\u79bb\u5b50\u6d53\u5ea6\u5927\u4e8e\u6c22\u6c27\u6839\u79bb\u5b50\u6d53\u5ea6\uff0c\u9178\u6839\u79bb\u5b50\u6d53\u5ea6\u5927\u4e8e\u94a0\u79bb\u5b50\u6d53\u5ea6\uff0c\u6eb6\u6db2\u4e2d4\u79cd\u79bb\u5b50\u7269\u8d28\u7684\u91cf\u6d53\u5ea6\u5927\u5c0f\u5173\u7cfb\u662fc\uff08A-\uff09\uff1ec\uff08Na+\uff09\uff1ec\uff08H+\uff09\uff1ec\uff08OH-\uff09\uff0c\u6545\u7b54\u6848\u4e3a\uff1ac\uff08A-\uff09\uff1ec\uff08Na+\uff09\uff1ec\uff08H+\uff09\uff1ec\uff08OH-\uff09\uff1b \u24620.2mol?L-1HA\u6eb6\u6db2\u4e0e0.1mol?L-1NaOH\u6eb6\u6db2\u7b49\u4f53\u79ef\u6df7\u5408\u540e\u6240\u5f97\u6eb6\u6db2\u4e2d\uff0c\u7531\u7535\u8377\u5b88\u6052\u6709\uff1ac\uff08Na+\uff09+c\uff08H+\uff09=c\uff08A-\uff09+c\uff08OH-\uff09\uff0c\u7531\u7269\u6599\u5b88\u6052\u6709\uff1a2c\uff08Na+\uff09=c\uff08A-\uff09+c\uff08HA\uff09\uff0c\u6545c\uff08H+\uff09+c\uff08HA\uff09-c\uff08OH-\uff09=c\uff08Na+\uff09=12\u00d70.1mol/L=0.05mol/L\uff0c\u6545\u7b54\u6848\u4e3a\uff1a0.05\uff1b\uff083\uff09pH=2\u7684\u7a00\u786b\u9178\u6eb6\u6db2\u4e2dC\uff08H+\uff09=10-2mol/L\uff0cpH=11\u7684NaOH\u6eb6\u6db2\u4e2dC\uff08H+\uff09=10-11mol/L\uff0c\u7b49\u4f53\u79ef\u6df7\u5408\u540e\u6eb6\u6db2\u5448\u4e2d\u6027\uff0c\u521910-2mol/L=Kw10?11mol/L\uff0c\u6240\u4ee5KW=1.0\u00d710-13\uff0c\u6545\u7b54\u6848\u4e3a\uff1a1.0\u00d710-13\uff1b\u2460\u5c06100mL 0.1mol?L-1\u7684\u7a00H2SO4\u6eb6\u6db2\u4e0e100mL 0.4mol?L-1\u7684NaOH\u6eb6\u6db2\u6df7\u5408\u540e\uff0c\u6c22\u6c27\u5316\u94a0\u8fc7\u91cf\uff0c\u53cd\u5e94\u540eC\uff08OH-\uff09=0.1\u00d70.4?0.1\u00d70.20.1+0.1=0.1mol/L\uff0c\u6545C\uff08H+\uff09=10?130.1mol/L=10-12 mol/L\uff0c\u6545\u53cd\u5e94\u540e\u6eb6\u6db2\u7684pH=-lg10-12=12\uff0c\u6545\u7b54\u6848\u4e3a\uff1a12\uff1b\u24611\u4f53\u79ef\u7684\u7a00\u786b\u9178\u548c10\u4f53\u79ef\u7684NaOH\u6eb6\u6db2\u6df7\u5408\u540e\u6eb6\u6db2\u5448\u4e2d\u6027\uff0c\u8bf4\u660e\u6c22\u79bb\u5b50\u7684\u7269\u8d28\u7684\u91cf\u7b49\u4e8e\u6c22\u6c27\u6839\u79bb\u5b50\u7684\u7269\u8d28\u7684\u91cf\uff0c\u4ee4pHa=a\uff0cpHb=b\uff0c\u5219\uff1a1\u00d710-a=10\u00d710?1310?b\uff0c\u6545a+b=12\uff0c\u5373pHa+pHb=12\uff0c\u6545\u7b54\u6848\u4e3a\uff1apHa+pHb=12\uff0e
\u7b54\u6848D
A C \u4f53\u79ef\u4e0d\u5bf9\uff0c\u56e0\u4e3a\u56fa\u4f53\u52a0500ml\u6c34\u4f53\u79ef\u4e0d\u518d\u662f500ml
B \u5e94\u8be5\u79f0\u53d60.05mol\u80c6\u77fe\uff0c\u56e0\u6b64\u8d28\u91cf\u662f12.5g \u4e0d\u662f12g
1．配制j上上mL jmol/Lt溶液，需要硫酸t物质t量为：n=jmol/L×上.jL=上.jmol，稀释过程中硫酸t物质t量不变，则需要浓硫酸t体积为：VmL×j.8tg/mL×98%=98g/mol×上.jmol，解得：V≈c.tmL，故1正确；
C．中和滴定实验，若滴定前平视读数、滴定结束俯视读数，导致消耗t标准液读数偏小，测定结果偏低，故C错误；
D．滴定管在盛放酸或者碱溶液时必须润洗，否则会将待装液稀释，如：酸式滴定管用蒸馏水洗涤后，即装入标准浓度t稀硫酸，导致标准液浓度减小，滴定时消耗t标准液体积偏h，测得tNaO个溶液t浓度将偏h，故D正确；
故选C．
绛旓細5.鎼呮媽鍧囧寑锛氱敤鐜荤拑鏉鎴栨悈鎷屾鎼呮媽婧舵恫锛岀‘淇濈洂閰稿厖鍒嗘憾瑙ｅ苟鍧囧寑鍒嗗竷鍦ㄦ憾娑蹭腑銆6.瀹夊叏鎿嶄綔鍜屼繚瀛橈細浣跨敤鐩愰吀鏃惰娉ㄦ剰瑕佹埓涓婇槻鎶ゆ墜濂楀拰鎶ょ洰闀滐紝纭繚瀹夊叏鎿嶄綔銆傚畬鎴愬悗锛屽皢鐩愰吀婧舵恫淇濆瓨鍦ㄥ瘑灏佺摱涓紝骞舵爣鏄庡叾娴撳害鍜屽唴瀹圭墿锛屼互渚挎棩鍚庝娇鐢ㄣ傝娉ㄦ剰锛屽湪閰嶅埗鐩愰吀婧舵恫鏃惰淇濇寔瀹為獙瀹瀹夊叏锛屽苟绮剧‘绉伴噺鍜屾贩鍚堝寲瀛﹀搧...
绛旓細涓嶅悓甯傚敭鐩愰吀娴撳害涓嶅悓锛岃鏍规嵁鍏蜂綋璐ㄩ噺鍒嗘暟鏉ラ厤缃備竴鑸競鍞祿鐩愰吀璐ㄩ噺鍒嗘暟涓36%-38%锛屼互37%鍚噺涓句緥锛屽叾瀵嗗害涓1.19g/ml锛1L娴撶洂閰稿叾鎽╁皵鏁颁负37%*(1.19*1000)/36.5=12mol锛屾懇灏旀祿搴﹀嵆涓12mol/L銆傜幇鍦ㄨ閰嶇疆1mol/L鐩愰吀锛屾寜鍏紡C1*V1=C2*V2,12*1=1*V寰梀锛12L锛孷=V锛堟祿鐩愰吀锛+V锛...
绛旓細x婧惰川鐨勬懇灏旇川閲 璇ラ璁鹃渶瑕37%鐨勬祿鐩愰吀Ag,鍒欐湁Ag*37%=1mol/L*0.1L*36.45锛屾墍浠ラ渶瑕37%鐨勬祿鐩愰吀9.85g銆 鍥犱负璐ㄩ噺鍒嗘暟涓37%鐨勬祿鐩愰吀鐨勫瘑搴︿负1.19g/mL,鎵浠ラ渶瑕37%鐨勬祿鐩愰吀浣撶Н=9.85g/1.19g/mL=8.28mL锛屽悓鏃堕渶瑕佺函姘100-8.28=91.72mL 瑙ｇ瓟鐨勬瘮杈冨暟鍡︼紝甯屾湜妤间富鑳界湅鎳傘
绛旓細鍥犱负瀹為獙瀹鍙湁100ml鐨勫閲忕摱銆佹墍浠ュ彧鑳介厤缃100ml婧舵恫銆佸啀閲忓彇93ml鐩稿簲鐨勩100ml1mol/L銆佸嵆闇瑕0.1molNa2CO3銆佸嵆0.1molNa2CO3路10H2O鏅朵綋鍗28.6g棣栧厛灏嗘墍闇浠櫒娲楀噣銆佸閲忕摱妫婕忕О鍙栫浉搴旇川閲忕殑鏅朵綋銆佸姞閫傞噺钂搁姘村湪灏忕儳鏉腑鎼呮媽浣挎櫠浣撳畬鍏ㄦ憾瑙ｃ佸綋婧舵恫涓庡娓╀竴鏍锋椂灏嗘憾娑茶浆绉诲埌瀹归噺鐡朵腑銆佺敤閫傞噺钂搁...
绛旓細mol/L)鎺ヤ笅鏉ワ紝鎴戜滑闇瑕佸皢浣撶Н杞崲涓烘鍗囷紙mL锛夈傜敱浜庡瘑搴︾殑瀹氫箟涓鸿川閲忎笌浣撶Н鐨勬瘮鍊硷紝鎴戜滑鍙互浣跨敤涓嬮潰鐨勫叕寮忚绠楄川閲忥細m = V 脳 d g/mL 鏈鍚庯紝鎴戜滑灏嗚川閲忚浆鎹负鍏嬶紙g锛夊苟灏嗗叾婧惰В鍦ㄨ冻澶熺殑姘翠腑锛屼娇鎬讳綋绉揪鍒 1 L銆傝娉ㄦ剰锛屾祿鐩愰吀鏄涓绉嶅己閰革紝浣跨敤鏃跺簲娉ㄦ剰瀹夊叏锛屽苟閬靛惊姝ｇ‘鐨瀹為獙瀹鎿嶄綔瑙勭▼銆
绛旓細閰嶅埗448mL婧舵恫锛岄渶瑕侀夌敤500mL瀹归噺鐡讹紝瀹為檯涓婇厤鍒剁殑鏄500mL 1mol/L鐨凬aCl婧舵恫锛涢厤鍒剁殑婧舵恫涓隘鍖栭挔鐨勭墿璐ㄧ殑閲忎负锛1mol/L脳0.5L=0.5mol锛岄渶瑕佹隘鍖栭挔鐨勮川閲忎负锛58.5g/mol脳0.5mol=29.25g锛岀敱浜庢墭鐩樺ぉ骞崇殑璇绘暟涓0.1g锛屾墍浠ョО閲忕殑姘寲閽犵殑璐ㄩ噺涓29.3g锛屾晠閫塀锛
绛旓細鐢1mol鐨則ris婧朵簬900ml姘翠腑锛屽洜涓簍ris鏄⒈鎬э紝鐢╤cl璋僷h锛屾渶缁堝畾瀹瑰埌1000ml銆俆ris涓夌緹鐢插熀姘ㄥ熀鐢茬兎锛屼笁缇熺敳鍩烘皑鍩虹敳鐑锋槸涓绉嶆湁鏈哄寲鍚堢墿锛屽叾鍒嗗瓙寮忎负(HOCH2)3CNH2銆俆ris琚箍娉涘簲鐢ㄤ簬鐢熺墿鍖栧鍜屽垎瀛愮敓鐗╁瀹為獙涓銆俆ris-HCl鏄瀹為獙瀹鏈甯哥敤鐨勪竴绉嶇紦鍐叉恫锛宲H鍊奸殢娓╁害鐨勫彉鍖栬屽彉鍖栥傞氬父鏉ヨ娓╁害姣忎笂鍗1鈩...
绛旓細鍥犱负瀹為獙瀹娌℃湁230mL鐨勫閲忕摱锛屾湁250mL鐨勫閲忕摱锛屾晠閫塁锛涒憿鏍规嵁m=CVM=1mol/L脳0.25L脳40g/mol=10g锛屾晠绛旀涓10g锛涒懀濡傛灉瀹為獙杩囩▼涓紝婧惰В姘㈡哀鍖栭挔鍥轰綋鐨勭儳鏉病鏈夋礂娑ゅ垯瀵艰嚧婧惰川鐨勭墿璐ㄧ殑閲忓亸灏忥紝鎵浠閰嶅埗婧舵恫鐨勬祿搴﹀亸浣庯紝瀹氬鏃朵刊瑙嗚瀵熸恫闈㈠鑷存憾娑茬殑浣撶Н鍋忓皬锛屽垯閰嶅埗婧舵恫鐨勬祿搴﹀亸楂橈紝鏁呯瓟妗堜负锛...
绛旓細100ml/1o00ml*1mol/L=0.1mol 1000ml(娴揌2S04)涓璈2S04璐ㄩ噺涓1000ml*1.84g/ml*98%=1803g n(H2SO4)=1803g/98g/mol=18.4mol 鍚0.1molH2SO4鐨勬祿纭吀鐨勪綋绉0.1mol/18.4mol/L=5.4ml
绛旓細鈶犵敤澶╁钩绉板彇姘㈡哀鍖栭挔鍥轰綋10g銆傗憽灏嗙О濂芥阿姘у寲閽犲浐浣撴斁鍏ョ儳鏉腑鍔犻傞噺钂搁姘村皢鍏舵憾瑙ｏ紝寰 鎭㈠鍒板娓╁悗锛屽皢婧舵恫娌跨幓鐠冩绉诲叆250mL鐨勫閲忕摱涓傗憿鐢ㄥ皯閲忚捀棣忔按鍐叉礂2鎴3娆★紝灏嗗啿娲楁恫绉诲叆瀹归噺鐡朵腑锛屽湪鎿嶄綔杩囩▼涓笉鑳芥崯澶辩偣婊存恫浣擄紝鍚﹀垯浼氫娇婧舵恫鐨勬祿搴﹀亸浣庯紙浣庢垨楂橈級銆傗懀鍚戝閲忕摱鍐呭姞姘磋嚦鍒诲害绾1鑷2...
