CBSE Class 11-science Answered
What is MOLALITY of water . I am not asking Molarity
Asked by govtsecschoolnayaganv051 | 17 Jan, 2019, 07:44: PM
Expert Answer
At 25 degrees the density of water is 0.9947g/ml which means 1ml of water weighs 0.9947g by mass.
So, the moles of water = 994.7g/GMM {1L = 1000X0.9947} = 994.7g /18g mol-1 ~ 55.34moles
Now, Molality (m) = Moles of water/Kg Of water = 55.34 moles/0.997Kg ~ 55.5m (Molality).
Answered by Sumit Chakrapani | 18 Jan, 2019, 02:45: AM
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