Answer to Question #234965 in Chemistry for Rajab ishmael

Question

Calculate the mass of sulphuric(VI) acid 250cm3 of a solution whose concentration is 0.25mole dm-3

Answer 1

Solution:

sulphuric(VI) acid = H₂SO₄

Convert cm³ to dm³:

1 cm³ = 0.001 dm³

Hence,

(250 cm³) × (0.001 dm³ / 1 cm³) = 0.25 dm³

Calculate the moles of H₂SO₄:

(0.25 mol dm^-3) × (0.25 dm³) = 0.0625 mol H₂SO₄

Calculate the mass of H₂SO₄:

The molar mass of H₂SO₄ is 98.08 g/mol

Hence,

(0.0625 mol H₂SO₄) × (98.08 g H₂SO₄ / 1 mol H₂SO₄) = 6.13 g H₂SO₄

Answer: The mass of sulphuric(VI) acid (H₂SO₄) is 6.13 g