Question

Concentrated aqueous sulphuric acid is 98% H2SO4 by mass and has density 1.84g/ml. What volume of acid is required to make 5L of 0.5M H2SO4 solution?

Answer 1

given,

molar mass of sulphuric acid, H2SO4 = 98 g/mol

density of sulphuric acid = 1.84 g/cm³

volume of solution = 5 Litre

concentration of H2SO4 = 0.5M

we know, number of mole of solute = concentration of solute in solution × volume of solution

so, number of mole of sulphuric acid = 0.5M × 5Litre = 2.5 moles.

now mole = given mass / molecular mass

or, 2.5 = given mass/98 g/mol

or, given mass = 2.5 × 98 = 245 g

now volume of sulphuric acid = mass of sulphuric acid/density of sulphuric acid

= 245/1.84 cm³

= 133.15 cm³

Brainliest pls