Question

Sulfur trioxide gas combines with water to form a single product.

SO3 + H2O → ?

Based on the law of conservation of mass, which option is the product of the reaction?

(1 point)
Responses

H2SO4
H sub 2 S O sub 4

H2SO3
H sub 2 S O sub 3

HSO4
H S O sub 4

H2S2O4
H sub 2 S sub 2 O sub 4
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Answer 1

H2SO4

Reason: SO3 + H2O → H2SO4. Atom count: S:1, H:2, O:3+1=4, so the product is H2SO4 (sulfuric acid).