3.193 moles of H2SO4 are contained in 400 ml of this solution
Molarity (M) is actually the amount of a substance that is present in certain volume of solution. Molarity is defined as the moles of a solute per liters of a solution. Molarity is also known as the molar concentration of the solution.
Number of moles of a solution is nothing but the given mass divided by the molecular mass. Considering this the number of moles of H2SO4 can be;
Consider 100 grams of solution contains 75 grams of solution, so
Number of moles of H2SO4 = 75 = 0.765
98
Volume of solution = 400
1.67
So molarity = 0.765 × 1.67 × 1000 = 3.193M
400
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