Answer to Question #100970 in Chemistry for Arjun

Question

What mass of sulphuric acid contains 1.4 mol of Oxygen

Answer 1

Task:

What mass of sulphuric acid contains 1.4 mol of Oxygen?

Solution:

1) H₂SO₄ --> 4O

n(H₂SO₄) = n(O)/4;

n(H₂SO₄) = 1.4 mol / 4 = 0.35 mol;

2) n = m / M;

m = n * M

M(H₂SO₄) = 2*Ar(H) + Ar(S) + 4*Ar(O) = 2*1 + 32 + 4*16 = 98 (g/mol).

m(H₂SO₄) = n(H₂SO₄) * M(H₂SO₄) = 0.35 mol * 98 g/mol = 34.3 g.

m(H₂SO₄) = 34.3 g.

Answer: 34.3 grams of sulphuric acid contains 1.4 mol of Oxygen.