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Question

What is the molarity of H2SO4 solution that has a density of 1.84 g/cc and contains 98% by mass of H2SO4

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Solution

1. Molarity is the number of moles of solute present in 1 Liter of its solution.

2. The solution contains 98% H2SO4 by weight/mass.

3. That means 100 ml of solutions contains 98 grams of H2SO4

4.Number of moles of H2SO4 = WeightofH2SO4MolecularmassofH2SO4 = 98/98 = 1 mole

5. Molarity=NumberofsoluteVolumeofsolutioninLiter

6. So molarity = 1100×100=10M


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