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CBSE Class 11-science Answered

How to find Molality of pure water ? Pls explain step by step
Asked by govtsecschoolnayaganv051 | 16 Jan, 2019, 08:52: PM
answered-by-expert Expert Answer
We know,
 
Molarity space equals fraction numerator No. space of space moles space over denominator Volume space of space solution space in space lit r e end fraction Density space of space pure space water space equals space 1 space straight g divided by ml space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 1 space kg divided by lit Desnity space equals space mass over volume Mass space equals space density cross times volume space space space space space space space space space equals space 1 cross times 1000 space ml space space space space space space space space space equals space 1000 space straight g No. space of space moles space space equals fraction numerator mass over denominator molar space mass end fraction space space space space space space space space space space space space space space space space space space space space space space equals 1000 over 18 space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 55.55 space mole Moalrity space equals fraction numerator 55.55 space over denominator 1 end fraction space space space space space space space space space space space space space equals space 55.55 space straight M
Answered by Varsha | 17 Jan, 2019, 10:36: AM

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CBSE 11-science - Chemistry
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