Question

reactants vs. products quick check
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)
○ h₂so₃
○ hso₄
○ h₂s₂o₄
○ h₂so₄

Explanation:

To find the product, we count the atoms of each element in the reactants. In \(SO_3\), there is 1 S and 3 O. In \(H_2O\), there are 2 H and 1 O. So in total, we have 2 H, 1 S, and 4 O.

• For \(H_2SO_3\): 2 H, 1 S, 3 O (incorrect as O count is wrong).
• For \(HSO_4\): 1 H, 1 S, 4 O (incorrect as H count is wrong).
• For \(H_2S_2O_4\): 2 H, 2 S, 4 O (incorrect as S count is wrong).
• For \(H_2SO_4\): 2 H, 1 S, 4 O (correct as it matches the atom counts from reactants).

Answer:

\(H_2SO_4\) (the fourth option)