20% oleum means that in 100 kg oleum, there are 20 kg of

1.	20% oleum means that in 100 kg oleum, there are 20 kg of
A.	SO₃ and 80 kg of H₂SO₄.
B.	H₂SO₄ and 80 kg of SO₃.
C.	SO₃ for each 100 kg of H₂SO₄.
D.	none of these.
Answer» B. H₂SO₄ and 80 kg of SO₃.

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