Part A Calculate the molality of the saltsolution. Part B Calculate the mole fra

Question

Part A Calculate the molality of the saltsolution.

Part B Calculate the mole fraction of salt in thissolution.

Part C Calculate the concentration of the saltsolution in percent by mass.


Part D Calculate the concentration of the saltsolution in parts per million


Part B Calculate the mole fraction of salt in thissolution.

Part C Calculate the concentration of the saltsolution in percent by mass.


Part D Calculate the concentration of the saltsolution in parts per million

Part C Calculate the concentration of the saltsolution in percent by mass.


Part D Calculate the concentration of the saltsolution in parts per million
Part D Calculate the concentration of the saltsolution in parts per million

Explanation / Answer

We know that :      Molality = number ofmoles of solute / Weight of the solvent Kg                    = 0.630 gm / 58.5 g / mole / 525 /1000 Kg                     = 0.020 molal     Xsalt solution  = number of moles of solute / Total number ofmoles of solution                           = 0.010769 / 0.010769 + 29.1666                            = 3.690 x 10-4        We can calculate theSolubility of the salt solution              S = Weight of the solute / weight of thesolvent x 100                              = 0.630 gm / 525 gm x 100                    = 0.12 %          We Know that ppm means pars per million , whichindicates that 1 gm of solute present in 1 gm ofsolvent per          1millionth of the solution.             Concentration in ppm for salt solution is :                weight of the solute / weight of the solvent x106 ppm             =   0.630 gm / 525 gm *106 ppm              = 1200 ppm        We can calculate theSolubility of the salt solution              S = Weight of the solute / weight of thesolvent x 100                              = 0.630 gm / 525 gm x 100                    = 0.12 %          We Know that ppm means pars per million , whichindicates that 1 gm of solute present in 1 gm ofsolvent per          1millionth of the solution.             Concentration in ppm for salt solution is :                weight of the solute / weight of the solvent x106 ppm             =   0.630 gm / 525 gm *106 ppm              = 1200 ppm

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