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An aqueous solution of ethanol has density `1.025 g/ mL` and it is 2 M. What is the molality of this solution ?A. `1.79`B. `2.143`C. `1.951`D. None of these |
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Answer» Correct Answer - B `w_(B) = 2 xx 46 = 92 gm` `w_(r) = rho xx V = 1.025 xx 1000 = 1025` `w_(A) = 1025 - 92 = 933` `m = (2)/(933) xx 1000 = 2.143` |
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