用胆矾配制0.1摩尔每升的硫酸铜溶液,是不是将胆矾加热除去结晶水,再取无水硫酸铜16克溶于1升水中 用胆矾配制0.1mol/L的硫酸铜溶液,正确的操作是( )...
\uff081\uff09\u4f7f\u7528\u80c6\u77fe\uff08CuSO4?5H2O\uff09\u914d\u52360.1mol/L\u7684\u786b\u9178\u94dc\u6eb6\u6db2\uff0c\u6b63\u786e\u7684\u64cd\u4f5c\u662f______A\uff0e\u5c06\u80c6\u77fe\u52a0\u70ed\u9664\u53bb\u7ed3\u6676\u6c34\u540e\uff0c\uff081\uff09A\uff0e16g\u786b\u9178\u94dc\u7684\u7269\u8d28\u7684\u91cf\u4e3a\uff1a16g160g/mol=0.1mol\uff0c0.1mol\u786b\u9178\u94dc\u6eb6\u4e8e1L\u6c34\u4e2d\uff0c\u6240\u5f97\u6eb6\u6db2\u7684\u4f53\u79ef\u4e0d\u662f1L\uff0c\u6545A\u9519\u8bef\uff1bB\uff0e\u79f0\u53d625g\u80c6\u77fe\u6eb6\u4e8e\u6c34\uff0c25g\u80c6\u77fe\u7684\u7269\u8d28\u7684\u91cf\u4e3a\uff1a25g250g/mol=0.1mol\uff0c\u7136\u540e\u5c06\u6b64\u6eb6\u6db2\u7a00\u91ca\u81f31L\uff0c\u6eb6\u6db2\u7684\u6d53\u5ea6\u4e3a0.1mol/L\uff0c\u6545B\u6b63\u786e\uff1bC\uff0e25g\u80c6\u77fe\u7684\u7269\u8d28\u7684\u91cf\u4e3a0.1mol\uff0c\u79f0\u53d625g\u80c6\u77fe\u6eb6\u89e3\u57281L\u6c34\u91cc\uff0c\u6240\u5f97\u6eb6\u6db2\u7684\u4f53\u79ef\u4e0d\u662f1L\uff0c\u6545C\u9519\u8bef\uff1bD\uff0e\u5c0616g\u80c6\u77fe\u7684\u7269\u8d28\u7684\u91cf\u5c0f\u4e8e0.1mol\uff0c\u5c06\u6b64\u6eb6\u6db2\u7a00\u91ca\u81f31L\uff0c\u6240\u5f97\u6eb6\u6db2\u6d53\u5ea6\u5c0f\u4e8e0.1mol/l\uff0c\u6545D\u9519\u8bef\uff1b\u6545\u7b54\u6848\u4e3a\uff1aB\uff0e\uff082\uff09\u914d\u5236250mL 0.5mol/L NaOH\u6eb6\u6db2\uff0c\u914d\u5236\u6b65\u9aa4\u6709\uff1a\u8ba1\u7b97\u3001\u79f0\u91cf\u3001\u6eb6\u89e3\u3001\u7a00\u91ca\u3001\u51b7\u5374\u3001\u8f6c\u79fb\u3001\u6d17\u6da4\u3001\u5b9a\u5bb9\u3001\u6447\u5300\u7b49\uff0c\u9700\u8981\u9009\u7528\u7684\u4eea\u5668\u4e3a\uff1a\u6258\u76d8\u5929\u5e73\u3001\u836f\u5319\u3001\u91cf\u7b52\u3001\u70e7\u676f\u3001\u73bb\u7483\u68d2\u3001250mL\u5bb9\u91cf\u74f6\u3001\u80f6\u5934\u6ef4\u7ba1\u7b49\uff0c\u5219\u9700\u8981\u7528\u5230\u7684\u4eea\u5668\u6709\uff1aABCDGHI\uff0c\u6545\u7b54\u6848\u4e3a\uff1aABCDGHI\uff0e
A\uff0e\u5e94\u7528\u80c6\u77fe\u76f4\u63a5\u914d\u5236\uff0c\u6545A\u9519\u8bef\uff1b B\uff0e\u6eb6\u89e3\u57281L\u6c34\u5f53\u4e2d\uff0c\u6eb6\u6db2\u7684\u4f53\u79ef\u4e0d\u662f1L\uff0c\u6545B\u9519\u8bef\uff1bC\uff0e\u914d\u52361000mL0.1mol/L\u7684\u786b\u9178\u94dc\u6eb6\u6db2\u9700\u80c6\u77fe\u7684\u8d28\u91cf\u4e3a1L\u00d70.1mol/L\u00d7250g/mol=25.0g\uff0c\u6eb6\u4e8e\u6c34\uff0c\u5c06\u6240\u5f97\u6eb6\u6db2\u6062\u590d\u5230\u5ba4\u6e29\uff0c\u518d\u8f6c\u79fb\u81f31000mL\u5bb9\u91cf\u74f6\u4e2d\uff0c\u6d17\u6da4\u5e76\u8f6c\u79fb\uff0c\u5b9a\u5bb9\uff0c\u53ef\u5f970.1mol/L\u7684\u786b\u9178\u94dc\u6eb6\u6db2\uff0c\u6545C\u6b63\u786e\uff1bD\uff0e\u5e94\u79f0\u53d625g\u80c6\u77fe\uff0c\u6545D\u9519\u8bef\uff0e\u6545\u9009C\uff0e
是的。这里不能直接称取胆矾,原因是胆矾在空气中会发生部分失水,所以不是纯净的五水合硫酸铜,称取胆矾来计算其物质的量不准。
将胆矾加热让其失水成为无水硫酸铜,这里需要加热至恒重(即加热后称量,再加热,再称量,直到质量不再变化,说明已经全部转为无水硫酸铜)。
绛旓細纭吀閾滃垎瀛愰噺160锛鑳嗙熅鍒嗗瓙閲250锛閰嶅埗1L0.1mol/L鐨勭~閰閾滄憾娑查渶瑕0.1mol纭吀閾滐紝鍗0.1*160=16g锛岄渶瑕佺殑鑳嗙熅璐ㄩ噺涓16*250/160=25g銆
绛旓細12.5g 鑳嗙熅CuSO45H2O锛岀浉瀵瑰垎瀛愯川閲250 閰嶇疆480ml锛屼絾鏄彧鏈500ml鐨勫閲忕摱锛屾墍浠ユ寜500绠椼0.05mol*250g/mol=12.5g
绛旓細1.闇瑕佺敤鍒扮殑浠櫒闄よ嵂鍖欙紝鎵樼洏澶╁钩锛堝甫鐮濈爜锛夛紝鐑ф澂澶栵紝杩橀渶瑕佺敤鍒板緱浠櫒鏄500ml瀹归噺鐡躲佽兌澶存淮绠°佺幓鐠冩 2.闇瑕鑳嗙熅鐨璐ㄩ噺搴旇浠ラ厤缃500ml涓哄熀鍑嗚绠 0.1mol/L*0.5L*250g/mol=12.5g
绛旓細0.1mol/L*0.1L=0.01mol 涔熷氨鏄渶瑕丆uSO4 1.6g 鑰2.5g鐨凜uSO4路5H2O姝eソ灏辨槸0.01mol 鑰屼笖鏈鍚庢槸瀹氬鍒颁簡100ml锛岃屼笉鏄敤浜100ml钂搁姘达紝鎵浠ユ棤褰卞搷 浣嗘槸锛屽畠娌℃湁娲楁钉锛屾墍浠ュ亸浣
绛旓細鑳嗙熅 涓轰簲姘村悎纭吀閾滐紝m=250脳0.1脳100梅1000鍏=2.5鍏
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绛旓細12.5g鑳嗙熅 棣栧厛500ml鐨0.1mol/L鐨勭~閰閾滄憾娑蹭腑锛岀~閰搁摐鐨勬憾璐ㄧ墿璐ㄧ殑閲忎负0.05mol,鎵浠ヨ姹傜~閰搁摐鐨勮川閲忎负0.05molx160g/mol=8g 鑳嗙熅灏辨槸浜旀按纭吀閾CuSO4*5H2O锛岋紙婧朵簬姘村悗5涓粨鏅舵按閮借铻嶆帀锛夊叾涓~閰搁摐鐨勮川閲忓垎鏁颁负160/250 鐢8g闄や互杩欎釜璐ㄩ噺鍒嗘暟鍗冲彲寰楀埌鎵闇瑕佺殑鑳嗙熅 涓12.5g ...
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绛旓細閫塁,A 鍙姞鐑笉鎺у埗鏉′欢鐨勮瘽鍙兘浼氬け姘翠笉瀹屽叏鎴栬呴犳垚鑳嗙熅鍒嗚В閫犳垚鍚勭涓嶅噯纭紝鑰屼笖鎿嶄綔楹荤儲銆侭 閰嶇疆鎴愮殑婧舵恫浣撶Н涓嶆槸涓鍗囷紝娴撳害涔熷氨涓嶆槸0.1mol/L C 25g鑳嗙熅閲纭吀閾滅殑鐗╄川鐨勯噺灏辨槸0.1mol锛屾墍浠ユ憾瑙d簬灏戦噺姘村啀鍔犳按閰嶆垚1L婧舵恫鎵寰楀嵆涓0.1mol/L D 16g鑳嗙熅涓墍鍚湁纭吀閾滅殑鐗╄川鐨勯噺灏忎簬0...
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