OpenStudy (anonymous):

A solution of H2SO4(aq) with a molal concentration of 3.58 m has a density of 1.200 g/ml. What is the molar concentration of this solution?

3 years ago
OpenStudy (australopithecus):

Molality = Moles/Kg of solvent Molarity = Moles/Liters of solution

3 years ago
OpenStudy (australopithecus):

1. Pick an arbitrary volume to work with, in this case 1kg of solvent we will say, 2. Solve for moles using molaility formula 3. Figure out grams of H2SO4 from moles determined in previous step using Moles = grams/Molecular mass of H2SO4 4. Grams of H2SO4 + Grams of solvent = Total mass in grams of solution Remember I picked 1kg for the mass of solvent and 1kg = 1000g 5. Use density to figure out total volume of solution in mL by setting up an equality, 1.2g/1mL = Total Mass in Grams of Solution/x mL solve for x to get the mL of solution 6. convert mL to liters 1L = 1000mL so multiply by (1/1000) to get to liters from mL 7. Input moles of H2SO4 determined in step 2 and Liters of solution determined in step 6 into the formula Molarity = Moles/Litres Your final answer will have units M

3 years ago