实验中需配500mL 0.10mol/L的NaOH溶液，用天平称量NaOH固体几克？？ 带步骤谢谢 实验室中需要配制500mL 0.10mol/L的NaOH溶液...
\u5b9e\u9a8c\u5ba4\u4e2d\u9700\u8981\u914d\u5236500mL0.10mol/L\u7684NaOH\u6eb6\u6db2\uff0e\u56de\u7b54\u4e0b\u5217\u95ee\u9898\uff0e\uff081\uff09\u5148\u7528\u6258\u76d8\u5929\u5e73\u79f0\u91cfNaOH\u56fa\u4f53______g\uff082\uff09\uff081\uff09m=cVM=0.1mol/L\u00d70.5L\u00d740g/mol=2.0g\uff0c\u70e7\u78b1\u6613\u5438\u6c34\u4e14\u5177\u6709\u5f3a\u8150\u8680\u6027\uff0c\u6240\u4ee5\u79f0\u91cf\u70e7\u78b1\u65f6\u8981\u653e\u5728\u70e7\u676f\u4e2d\uff0c\u6545\u7b54\u6848\u4e3a\uff1a2.0\uff1b\uff082\uff09\u914d\u5236\u4e00\u5b9a\u7269\u8d28\u7684\u91cf\u6d53\u5ea6\u7684\u6eb6\u6db2\u6b65\u9aa4\u662f\uff1a\u79f0\u91cf\u3001\u6eb6\u89e3\u3001\u51b7\u5374\u3001\u8f6c\u79fb\u3001\u6d17\u6da4\u3001\u8f6c\u79fb\u3001\u5b9a\u5bb9\u3001\u6447\u5300\u7b49\uff0c\u4f7f\u7528\u7684\u4eea\u5668\u6709\uff1a\u6258\u76d8\u5929\u5e73\u3001\u836f\u5319\u3001\u70e7\u676f\u3001\u73bb\u7483\u68d2\u3001500mL\u5bb9\u91cf\u74f6\u3001\u80f6\u5934\u6ef4\u7ba1\uff0c\u6240\u4ee5\u8fd8\u9700\u8981\u4eea\u5668\u4e3a\uff1a500mL\u5bb9\u91cf\u74f6\uff0c\u6545\u7b54\u6848\u4e3a\uff1a500mL\u5bb9\u91cf\u74f6\uff1b \uff083\uff09\u82e5\u4ece\u914d\u5236\u7684\u6eb6\u6db2\u4e2d\u53d6\u51fa50mL\u7f6e\u4e8e\u8bd5\u5242\u74f6\u4e2d\uff0c\u518d\u8d34\u4e0a\u6807\u7b7e\uff0c\u6807\u7b7e\u4e0a\u7684\u5185\u5bb9\u662f\u6c22\u6c27\u5316\u94a0\u6eb6\u6db2\u53ca\u5176\u6d53\u5ea6\uff0c\u5373\uff1a0.10mol/L NaOH\u6eb6\u6db2\uff0c\u6545\u7b54\u6848\u4e3a\uff1a0.10mol/L NaOH\u6eb6\u6db2\uff1b\uff084\uff09\u82e5\u4ece\u914d\u5236\u7684\u6eb6\u6db2\u4e2d\u53d6\u51fa10mL\u6eb6\u6db2\uff0c\u52a0\u6c34\u7a00\u91ca\u81f320mL\uff0c\u6839\u636ec=nV\uff0c\u6eb6\u8d28\u7684\u7269\u8d28\u7684\u91cf\u4e0d\u53d8\uff0c\u6eb6\u6db2\u7684\u4f53\u79ef\u4e0e\u6d53\u5ea6\u6210\u53cd\u6bd4\uff0c\u6240\u4ee5\u7a00\u91ca\u540e\u6eb6\u6db2\u7684\u6d53\u5ea6\u4e3a\uff1a0.10mol/L\u00d710mL20mL=0.05mol/L\uff0c\u6545\u7b54\u6848\u4e3a\uff1a0.05mol/L\uff1b\uff085\uff09A\uff0e\u6c22\u6c27\u5316\u94a0\u6f6e\u89e3\u5bfc\u81f4\u6eb6\u8d28\u7684\u7269\u8d28\u7684\u91cf\u504f\u5c0f\uff0c\u6839\u636ec=nV\u53ef\u77e5\uff0c\u914d\u5236\u6eb6\u6db2\u7684\u6d53\u5ea6\u504f\u4f4e\uff0c\u6545A\u9519\u8bef\uff1bB\uff0eNaOH\u6eb6\u89e3\u65f6\u653e\u51fa\u5927\u91cf\u7684\u70ed\uff0c\u672a\u51b7\u5374\u7acb\u5373\u914d\u5236\u6eb6\u6db2\uff0c\u5bfc\u81f4\u6eb6\u6db2\u7684\u4f53\u79ef\u504f\u5c0f\uff0c\u6839\u636ec=nV\u53ef\u77e5\uff0c\u914d\u5236\u6eb6\u6db2\u7684\u6d53\u5ea6\u504f\u9ad8\uff0c\u6545B\u9519\u8bef\uff1bC\uff0e\u6447\u5300\u5b9a\u5bb9\u540e\uff0c\u53c8\u7528\u80f6\u5934\u6ef4\u7ba1\u5411\u5bb9\u91cf\u74f6\u4e2d\u6ef4\u52a0\u84b8\u998f\u6c34\u81f3\u523b\u5ea6\u7ebf\uff0c\u5bfc\u81f4\u914d\u5236\u7684\u6eb6\u6db2\u4f53\u79ef\u504f\u5927\uff0c\u6839\u636ec=nV\u53ef\u77e5\uff0c\u914d\u5236\u6eb6\u6db2\u7684\u6d53\u5ea6\u504f\u4f4e\uff0c\u6545C\u9519\u8bef\uff1bD\uff0e\u914d\u5236\u6eb6\u6db2\u524d\u7528\u84b8\u998f\u6c34\u6da6\u6d17\u5bb9\u91cf\u74f6\uff0c\u4f46\u672a\u70d8\u5e72\uff0c\u7531\u4e8e\u5b9a\u5bb9\u8fd8\u9700\u8981\u52a0\u5165\u84b8\u998f\u6c34\uff0c\u6240\u4ee5\u4e0d\u5f71\u54cd\u914d\u5236\u7ed3\u679c\uff0c\u6545D\u6b63\u786e\uff1b\u6545\u9009D\uff1b \uff086\uff09\u8f6c\u79fb\u6eb6\u6db2\u65f6\u5fc5\u987b\u4f7f\u7528\u73bb\u7483\u68d2\u5f15\u6d41\uff0c\u5426\u5219\u5bb9\u6613\u5bfc\u81f4\u6eb6\u6db2\u6d41\u5230\u5bb9\u91cf\u74f6\u5916\u8fb9\uff0c\u4f7f\u6eb6\u6db2\u4e2d\u6eb6\u8d28\u7684\u7269\u8d28\u7684\u91cf\u504f\u5c0f\uff0c\u914d\u5236\u7684\u6eb6\u6db2\u6d53\u5ea6\u504f\u4f4e\uff0c\u6545\u7b54\u6848\u4e3a\uff1a\u672a\u7528\u73bb\u7483\u68d2\u5f15\u6d41\uff1b\u4f7f\u6eb6\u8d28\u7684\u7269\u8d28\u7684\u91cf\u964d\u4f4e\uff0e
\uff081\uff09\u9700\u6c22\u6c27\u5316\u94a0\u7684\u8d28\u91cf\u4e3a\uff1am\uff08NaOH\uff09=0.5L\u00d70.1mol?L-1\u00d740g/mol=2.0g\uff1b\u6c22\u6c27\u5316\u94a0\u6709\u8150\u8680\u6027\u6613\u6f6e\u89e3\u5e94\u653e\u5728\u5c0f\u70e7\u676f\u5185\u8fc5\u901f\u79f0\u91cf\uff0c\u9632\u6b62\u79f0\u91cf\u65f6\u95f4\u8fc7\u957f\uff0cNaOH\u5438\u6c34\uff0c\u6545\u7b54\u6848\u4e3a\uff1a2.0\uff1b\u9632\u6b62\u79f0\u91cf\u65f6\u95f4\u8fc7\u957f\uff0cNaOH\u5438\u6c34\uff1b\uff082\uff09\u914d\u5236500mL\u7684\u6c22\u6c27\u5316\u94a0\u6eb6\u6db2\uff0c\u9700\u8981\u9009\u7528500mL\u5bb9\u91cf\u74f6\uff0c\u5b9a\u5bb9\u65f6\u5fc5\u987b\u4f7f\u7528\u80f6\u5934\u6ef4\u7ba1\u5b9a\u5bb9\uff0c\u6240\u4ee5\u8fd8\u7f3a\u5c11500mL\u5bb9\u91cf\u74f6\u3001\u80f6\u5934\u6ef4\u7ba1\uff1b\u9009\u62e9\u5e26\u523b\u5ea6\u7684500mL\u70e7\u676f\u548c\u73bb\u7483\u68d2\u914d\u5236NaOH\u6eb6\u6db2\uff0c\u7531\u4e8e500mL\u70e7\u676f\u6240\u91cf\u4f53\u79ef\u5e76\u4e0d\u7cbe\u786e\uff0c\u8be5\u540c\u5b66\u6240\u914d\u6eb6\u6db2\u7684\u6d53\u5ea6\u53ea\u662f\u7ea6\u4e3a0.1 mol/L\uff0c\u6545\u7b54\u6848\u4e3a\uff1a500mL\u5bb9\u91cf\u74f6\u3001\u80f6\u5934\u6ef4\u7ba1\uff1b\u7531\u4e8e500mL\u70e7\u676f\u6240\u91cf\u4f53\u79ef\u5e76\u4e0d\u7cbe\u786e\uff0c\u8be5\u540c\u5b66\u6240\u914d\u6eb6\u6db2\u7684\u6d53\u5ea6\u53ea\u662f\u7ea6\u4e3a0.1 mol/L\uff1b\uff083\uff09\u4ece\u6240\u914d\u7684\u6eb6\u6db2\u4e2d\u53d6\u51fa50mL\u4e8e\u4e00\u8bd5\u5242\u74f6\u4e2d\uff0c\u6807\u7b7e\u4e0a\u5e94\u8be5\u6ce8\u660e\u6eb6\u6db2\u7684\u540d\u79f0\u53ca\u6d53\u5ea6\uff0c\u8be5\u6c22\u6c27\u5316\u94a0\u6eb6\u6db2\u7684\u6807\u7b7e\u7684\u5185\u5bb9\u4e3a\uff1a0.10 mol/L NaOH\uff08aq\uff09\uff1b\u82e5\u518d\u4ece\u4e2d\u53d6\u51fa10mL\u6eb6\u6db2\u52a0\u6c34\u7a00\u91ca\u81f320mL\uff0c\u6839\u636en=cV\u53ef\u77e5\uff0c\u6d53\u5ea6\u4e0e\u6eb6\u6db2\u7684\u4f53\u79ef\u6210\u53cd\u6bd4\uff0c\u4f53\u79ef\u6269\u5927\u4e3a\u539f\u5148\u76842\u500d\uff0c\u5219\u6b64\u65f6\u6eb6\u6db2\u7684\u7269\u8d28\u7684\u91cf\u6d53\u5ea6\u4e3a0.01mol/L\u00d712=0.05mol/L\uff0c\u6545\u7b54\u6848\u4e3a\uff1a0.10 mol/L NaOH\uff08aq\uff09\uff1b0.05 mol/L\uff1b\uff084\uff09A\uff0e\u79f0\u91cf\u65f6\u5df2\u89c2\u5bdf\u5230NaOH\u8868\u9762\u6f6e\u6e7f\uff0c\u5bfc\u81f4\u914d\u5236\u7684\u6eb6\u6db2\u4e2d\u6c22\u6c27\u5316\u94a0\u7684\u7269\u8d28\u7684\u91cf\u504f\u5c0f\uff0c\u914d\u5236\u7684\u6eb6\u6db2\u6d53\u5ea6\u504f\u4f4e\uff0c\u6545A\u9519\u8bef\uff1bB\uff0e\u5c06\u70e7\u676f\u4e2d\u6eb6\u89e3\u540e\u7684\u6eb6\u6db2\u7acb\u5373\u6ce8\u5165\u5bb9\u91cf\u74f6\uff0c\u7136\u540e\u518d\u6dfb\u52a0\u84b8\u998f\u6c34\u81f3\u523b\u5ea6\u7ebf\uff0c\u6ca1\u6709\u51b7\u5374\uff0c\u70ed\u7684\u6eb6\u6db2\u4f53\u79ef\u504f\u5927\uff0c\u51b7\u5374\u540e\u6eb6\u6db2\u4f53\u79ef\u53d8\u5c0f\uff0c\u5bfc\u81f4\u914d\u5236\u7684\u6eb6\u6db2\u4f53\u79ef\u504f\u5c0f\uff0c\u914d\u5236\u7684\u6eb6\u6db2\u6d53\u5ea6\u504f\u9ad8\uff0c\u6545B\u9519\u8bef\uff1bC\uff0e\u6447\u5300\u5b9a\u5bb9\u540e\uff0c\u53c8\u7528\u80f6\u5934\u6ef4\u7ba1\u5411\u5bb9\u91cf\u74f6\u4e2d\u6ef4\u52a0\u84b8\u998f\u6c34\u81f3\u523b\u5ea6\u7ebf\uff0c\u5927\u9a97\u5b50\u52a0\u5165\u7684\u84b8\u998f\u6c34\u4f53\u79ef\u504f\u5927\uff0c\u914d\u5236\u7684\u6eb6\u6db2\u4f53\u79ef\u504f\u5927\uff0c\u6eb6\u6db2\u6d53\u5ea6\u504f\u4f4e\uff0c\u6545C\u9519\u8bef\uff1bD\uff0e\u914d\u5236\u6eb6\u6db2\u524d\u7528\u84b8\u998f\u6c34\u6da6\u6d17\u5bb9\u91cf\u74f6\uff0c\u4f46\u672a\u70d8\u5e72\uff0c\u5bf9\u6eb6\u8d28\u7684\u7269\u8d28\u7684\u91cf\u53ca\u6eb6\u6db2\u7684\u4f53\u79ef\u90fd\u6ca1\u6709\u5f71\u54cd\uff0c\u6240\u4ee5\u4e0d\u5f71\u54cd\u914d\u5236\u7ed3\u679c\uff0c\u6545D\u6b63\u786e\uff1b\u6545\u7b54\u6848\u4e3a\uff1aD\uff0e
解：需要NaoH的摩尔量为0.5L*0.1mol/L=0.05mol ，故NaoH的质量为0.05mol*NaoH的相对质量=0.05mol*40g/mol=2g,故用天平称取2克，解：500ml=0.5L，0.5L*0.1mol/L =0.05mol,0.05*40g=2g。∴需要氢氧化钠固体2g。谢谢采纳！
50g. 0.1＊0.5L=0.05ml=50g
扩展阅读：球镜一2.00近视几多度 ... 儿童球镜一0.75能自愈 ... 球镜一0.5近视几多度 ... 球镜一3.75近视几多度 ... 儿童球镜近视500度 ... 球镜一2.25近视几多度 ... 球镜7.00是近视多少 ... 柱镜一1.50是近视吗 ... 柱镜一1.00近视几多度 ...
