Question

H2SO4 solution is 500 molal (d = 1.8g/mL) hence, its molarity is….​

Answer 1

Answer:

Explanation:

molality = mol H2SO4/kg solvent

molarity = mol H2SO4/L solution

Using density,

Mass of the solution = 1.8g/ml * 1000 ml = 1800g

Molecular weight of H2SO4 = 98g

Mass of solute (H2SO4) = 18 mol * 98 g = 1764 g

Mass of solvent = mass of solution - mass of solute

= 1800 g - 1764 g

= 36 g = 0.0036 kg

Molality = mol. H2SO4/ kg of solvent

= 18 mol/0.0036kg

= 500 mol/kg

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