In the extraction of bromine from seawater (reaction 22.3), seawater is first brought to a pH of 3.5 and then treated with Cl₂(g). In practice, the pH of the seawater is adjusted with H₂SO₄, and the mass of chlorine used is 15% in excess of the theoretical. Assuming a seawater sample with an initial pH of 7.0, a density of 1.03 g cm^–3, and a bromine content of 70 ppm by mass, what masses of H₂SO₄ and Cl₂ would be used in the extraction of bromine from 1.00 x 10³ L of seawater?

Reaction (22.3)

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Cl₂(g) 2 Br (aq) Br₂(1) + 2 Cl(aq) Ecell = 0.293 V (22.3)