1.

An aqueous solution has a density of `1. 37 g//ml`. If molecular wt of solute is `68.5 g//mol`, then calculate molarity of solution.A. `2 M`B. `50 M`C. `5 M`D. `20 M`

Answer» Correct Answer - D
Molarity `= (d xx 1000)/(Mw) = (1.37 xx 1000)/(68.5)`
`= (125 xx 1000)/(6250) = 20M`
Note : In this question, `%` by wt should be given but it is missing therefore for calculation of molarity we consider `100 %` pure liquid.


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