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The freezing point of an aqueous solution of MoBr was found to be 30'C.

Calculate the best that MgBry solution Krwater - 1.86 "Cim Ke water 0.512 "Cim 101.1 "C 100.5 °C 102.1 "C OO 99.9 °C 101.5 °C

Answer :

The molality of the MgBr₂ solution is approximately 3.63 mol/kg or 3.63 m.

The freezing point of an aqueous solution of MoBr can be calculated using the equation ΔT = Kf * m, where ΔT is the change in freezing point, Kf is the cryoscopic constant for the solvent (water), and m is the molality of the solution (moles of solute per kg of solvent).

Given the freezing point depression of 1.86°C for MgBr₂ in water, we can set up the equation as 1.86°C = Kf * m. Substituting the given values, we have 1.86°C = 0.512°C/m * m, which simplifies to m = 1.86°C / 0.512°C/m.

Therefore, the molality of the MgBr₂ solution is approximately 3.63 mol/kg or 3.63 m.

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