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`222.6g` एथिलीन ग्लाइकॉल `C_(2)H_(4)(OH)_(2)` तथा 200g जल को मिलाकर प्रतिहीम मिश्रण बनाया गया . विलयन की मोललता की गणना कीजिए . यदि विलयन का घनत्व `1.072gmL^(-1)` हो तो विलयन की मोलरता निकालिए.

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एथिलीन ग्लाइकॉल की मोललता
`=(222.6)/(62xx(200)/(1000))=17.95M`
विलयन का भार = ग्लाइकॉल का भार + जल का भार
`=222.6+200=422.6g`
विलयन का आयतन `=(422.6)/(1.072)mL`
एथिलीन ग्लाइकॉल की मोललता `=(222.6)/(62xx(422.6)/(1.072xx1000))=9.11m`

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