实验室配制1mol/L的稀硫酸250ml，需要18.4mol/L的浓硫酸多少ml 把浓硫酸稀释到一定浓度要怎么操作，如，用18.4mol/L的...
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\u8bbe\u6d53\u786b\u9178\u7684\u4f53\u79ef\u4e3aVml\uff0c\u521918.4mol/L\u00d7Vml=1mol/L\u00d7100ml\uff0c\u89e3\u5f97V=5.4\uff0c\u56e0\u5f53\u52a0\u6c34\u81f3\u6db2\u9762\u8ddd\u79bb\u523b\u5ea6\u7ebf1\uff5e2cm\u65f6\uff0c\u6539\u7528\u80f6\u5934\u6ef4\u7ba1\u6ef4\u52a0\uff0c\u4f7f\u6eb6\u6db2\u7684\u51f9\u6db2\u9762\u7684\u6700\u4f4e\u70b9\u4e0e\u523b\u7ebf\u76f8\u5e73\uff0e\u6545\u7b54\u6848\u4e3a5.4\uff1b1\uff5e2cm\uff1b\uff081\uff09\u914d\u5236\u6b65\u9aa4\u6709\u91cf\u53d6\u3001\u7a00\u91ca\u3001\u79fb\u6db2\u3001\u6d17\u6da4\u3001\u5b9a\u5bb9\u3001\u6447\u5300\u7b49\u64cd\u4f5c\uff0c\u4e00\u822c\u7528\u91cf\u7b52\u91cf\u53d6\uff08\u7528\u5230\u80f6\u5934\u6ef4\u7ba1\uff09\u79f0\u91cf\uff0c\u5728\u70e7\u676f\u4e2d\u7a00\u91ca\uff0c\u51b7\u5374\u540e\u8f6c\u79fb\u5230100mL\u5bb9\u91cf\u74f6\u4e2d\uff0c\u5e76\u7528\u73bb\u7483\u68d2\u5f15\u6d41\uff0c\u8f6c\u79fb\u5b8c\u6bd5\uff0c\u7528\u5c11\u91cf\u84b8\u998f\u6c34\u6d17\u6da4\u70e7\u676f\u53ca\u73bb\u7483\u68d22\uff5e3\u6b21\u5e76\u5c06\u6d17\u6da4\u6db2\u5168\u90e8\u8f6c\u79fb\u5230\u5bb9\u91cf\u74f6\u4e2d\uff0c\u518d\u52a0\u9002\u91cf\u84b8\u998f\u6c34\uff0c\u5f53\u52a0\u6c34\u81f3\u6db2\u9762\u8ddd\u79bb\u523b\u5ea6\u7ebf1\uff5e2cm\u65f6\uff0c\u6539\u7528\u80f6\u5934\u6ef4\u7ba1\u6ef4\u52a0\uff0c\u4f7f\u6eb6\u6db2\u7684\u51f9\u6db2\u9762\u7684\u6700\u4f4e\u70b9\u4e0e\u523b\u7ebf\u76f8\u5e73\uff0c\u585e\u597d\u74f6\u585e\uff0c\u53cd\u590d\u4e0a\u4e0b\u98a0\u5012\u6447\u5300\uff0e\u6545\u7b54\u6848\u4e3a\uff1aDACBEGF\uff0e\uff082\uff09\u7531\uff081\uff09\u64cd\u4f5c\u6b65\u9aa4\u53ef\u77e5\uff0c\u7a00\u91ca\u540e\u5fc5\u987b\u51b7\u5374\u81f3\u5ba4\u6e29\uff0c\u518d\u8f6c\u79fb\u5230\u5bb9\u91cf\u74f6\u4e2d\uff0e\u6545\u7b54\u6848\u4e3a\uff1a\u51b7\u5374\u81f3\u5ba4\u6e29\uff0e\uff083\uff09\u7531\uff081\uff09\u64cd\u4f5c\u6b65\u9aa4\u53ef\u77e5\uff0c\u6240\u7528\u4eea\u5668\u6709\u70e7\u676f\u3001\u73bb\u7483\u68d2\u3001\u91cf\u7b52\u3001100mL\u5bb9\u91cf\u74f6\u3001\u80f6\u5934\u6ef4\u7ba1\uff0e\u6240\u4ee5\u8fd8\u9700\u8981\u91cf\u7b52\u3001\u70e7\u676f\u3001100mL\u5bb9\u91cf\u74f6\uff0e\u6545\u7b54\u6848\u4e3a\uff1a\u91cf\u7b52\u3001\u70e7\u676f\u3001100mL\u5bb9\u91cf\u74f6\uff0e\uff084\uff09A\uff0e\u8f6c\u79fb\u6eb6\u6db2\u540e\u6ca1\u6709\u6d17\u6da4\u70e7\u676f\u5185\u58c1\uff0c\u79fb\u5165\u5bb9\u91cf\u74f6\u5185\u6eb6\u8d28\u786b\u9178\u7684\u7269\u8d28\u7684\u91cf\u51cf\u5c0f\uff0c\u6240\u914d\u6eb6\u6db2\u6d53\u5ea6\u504f\u4f4e\uff0c\u6545A\u7b26\u5408\uff1bB\uff0e\u914d\u5236\u9700\u52a0\u6c34\u5b9a\u5bb9\uff0c\u914d\u5236\u524d\u5bb9\u91cf\u74f6\u5185\u6709\u5c11\u91cf\u6c34\uff0c\u5bf9\u6240\u914d\u6eb6\u6db2\u6d53\u5ea6\u65e0\u5f71\u54cd\uff0c\u6545B\u4e0d\u7b26\u5408\uff1bC\uff0e\u5b9a\u5bb9\u65f6\u4ef0\u89c6\uff0c\u5bfc\u81f4\u6eb6\u6db2\u4f53\u79ef\u504f\u5927\uff0c\u6240\u914d\u6eb6\u6db2\u6d53\u5ea6\u504f\u4f4e\uff0c\u6545C\u7b26\u5408\uff1bD\uff0e\u6eb6\u6db2\u6709\u70ed\u80c0\u51b7\u7f29\u7684\u6027\u8d28\uff0c\u6d53\u786b\u9178\u7a00\u91ca\uff0c\u653e\u51fa\u5927\u91cf\u7684\u70ed\uff0c\u7a00\u91ca\u540e\u672a\u6062\u590d\u5ba4\u6e29\u7acb\u5373\u8f6c\u79fb\u5230\u5bb9\u91cf\u74f6\u4e2d\u5b9a\u5bb9\uff0c\u5bfc\u81f4\u6240\u914d\u6eb6\u6db2\u4f53\u79ef\u51cf\u5c0f\uff0c\u6240\u914d\u6eb6\u6db2\u6d53\u5ea6\u504f\u9ad8\uff0c\u6545D\u4e0d\u7b26\u5408\uff0e\u6545\u9009\uff1aAC\uff0e
H2SO4 物质的量不变1*0.25 ==18.4 *V
V==0.0136 L
即 13.6 ml
绛旓細锛1锛夌О閲忕敤鎵樼洏澶╁钩锛屾病鏈90ml鐨勫閲忕摱锛屽簲閰嶅埗100ml锛孨aOH鍥轰綋鐨勮川閲忎负锛1mol/L脳0.1L脳40g/mol=4.0g锛涚儳鏉拰鐜荤拑妫掗渶瑕佹礂娑わ紝娲楁钉娑蹭篃瑕佽浆绉诲埌瀹归噺鐡朵腑锛涙阿姘у寲閽犳憾浜庢按鏀剧儹锛屽悜瀹归噺鐡朵腑缁х画鍔犺捀棣忔按锛岃嚦娑查潰鎺ヨ繎鍒诲害绾1锝2cm锛屾晠绛旀涓猴細鎵樼洏澶╁钩锛4.0锛涚儳鏉紱鐜荤拑妫掞紱瀹归噺鐡讹紱鍐峰嵈锛1锝...
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
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绛旓細鐢变簬瀹為獙瀹娌℃湁瑙勬牸涓220mL鐨勫閲忕摱锛閰嶅埗婧舵恫鏃堕渶瑕侀夌敤250mL鐨勫閲忕摱锛屾墍浠ュ疄闄呴厤鍒剁殑婧舵恫涓猴細250mL 1mol/L鐨凬aOH婧舵恫锛岄厤鍒剁殑婧舵恫涓惈鏈夌殑姘㈡哀鍖栭挔鐨勭墿璐ㄧ殑閲忎负锛1mol/L脳0.25L=0.25mol锛屾阿姘у寲閽犵殑璐ㄩ噺涓猴細40g/mol脳0.25mol=10g锛屾晠閫塁锛
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0.5脳58.5
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
