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An Aqueous solution of orthophosphoric acid has a measured density of 1.2089 grams/ mL1 and is 5.257 molal. How many moles orthophosphoric acid are in 1 liter of this solution?
 one year ago
 one year ago
An Aqueous solution of orthophosphoric acid has a measured density of 1.2089 grams/ mL1 and is 5.257 molal. How many moles orthophosphoric acid are in 1 liter of this solution?
 one year ago
 one year ago

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aaronqBest ResponseYou've already chosen the best response.0
find mass: density=mass/volume convert to moles: moles=mass/molar mass
 one year ago

JeanetteBakerBest ResponseYou've already chosen the best response.1
use the density to find the mass of one liter: (1 L)*(1 g/1.2089 mL)*(10^3 mL/ 1 L)*(1 kg/10^3 g) = .8272 kg next, convert molals to moles: (5.257 mole solute/kg solvent)*(.8272 kg) = 4.378 moles
 one year ago
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