在标准状况下，将224L的Hcl气体溶于635mL的水中（设水的密度为1.00g/cm3），求所得盐酸的质量分数？ 在标准状况下，将224L氯化氢气体溶于635mL的水（密度为...

\u5728\u6807\u51c6\u72b6\u51b5\u4e0b\uff0c\u5c06224L\u7684Hcl\u6c14\u4f53\u6eb6\u4e8e635mL\u7684\u6c34\u4e2d\uff08\u8bbe\u6c34\u7684\u5bc6\u5ea6\u4e3a1.00g/cm3\uff09\uff0c\u6c42\u6240\u5f97\u76d0\u9178\u7684\u8d28\u91cf\u5206\u6570\uff1f\u82e5\u53d6

HCl\u7684\u7269\u8d28\u7684\u91cf 224/22.4=10(mol)
HCl\u7684\u8d28\u91cf10*36.5\uff1d365\uff08g\uff09
\u6eb6\u6db2\u7684\u8d28\u91cf365+635*1\uff1d1000\uff08g\uff09
HCl\u7684\u8d28\u91cf\u5206\u6570365/1000\u00d7100\uff05\uff1d36.5\uff05
c\uff08HCl\uff09\uff1d1000*1.19*36.5%/36.5=11.9(mo/L)
\u7a00\u91ca\u540e\u6d53\u5ea6 11.9*10\uff1d1190c \uff0cc\uff1d0.1\uff08mol/L\uff09
\u671b\u91c7\u7eb3\uff01\u8c22\u8c22~

\uff081\uff09224L\u6c2f\u5316\u6c22\u6c14\u4f53\u7269\u8d28\u7684\u91cf\u4e3a224L22.4L/mol=10mol\uff0c\u6545HCl\u7684\u8d28\u91cf=10mL\u00d736.5g/mol=365g\uff0c\u6c34\u7684\u8d28\u91cf\u4e3a635mL\u00d71g/mL=635g\uff0c\u8be5\u6eb6\u6db2\u8d28\u91cf\u5206\u6570\u4e3a365g365g+635g\u00d7100%=36.5%\uff0c\u7b54\uff1a\u8be5\u76d0\u9178\u4e2d\u6eb6\u8d28\u7684\u8d28\u91cf\u5206\u6570\u662f36.5%\uff1b\uff082\uff09\u8be5\u76d0\u9178\u7684\u7269\u8d28\u7684\u91cf\u6d53\u5ea6\u4e3a1000\u00d71.18\u00d736.5%36.5mol/L=11.8mol/L\uff0c\u4ee4\u7a00\u91ca\u540e\uff0c\u6240\u5f97\u7a00\u76d0\u9178\u7684\u7269\u8d28\u7684\u91cf\u6d53\u5ea6\u4e3acmol/L\uff0c\u6839\u636e\u7a00\u91ca\u5b9a\u5f8b\uff0c\u7a00\u91ca\u524d\u540e\u6eb6\u8d28\u7684\u7269\u8d28\u7684\u91cf\u4e0d\u53d8\uff0c\u5219\uff1a0.01L\u00d711.8mol/L=1L\u00d7cmol/L\uff0c\u89e3\u5f97c=0.118mol/L\uff0c\u7b54\uff1a\u6240\u5f97\u7a00\u76d0\u9178\u7684\u7269\u8d28\u7684\u91cf\u6d53\u5ea6\u662f0.118mol/L\uff0e

HCl的物质的量 224/22.4=10(mol)
HCl的质量10*36.5＝365（g）
溶液的质量365+635*1＝1000（g）
HCl的质量分数365/1000×100％＝36.5％
c（HCl）＝1000*1.19*36.5%/36.5=11.9(mo/L)
稀释后浓度 11.9*10＝1190c ，c＝0.1（mol/L）

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