Http://i63.tinypic.com/332qdn8.jpg - Question 1２ why is the answer (D)..?

12.
H₂SO₄(aq) + CuO(s) → CuSO₄(aq) + H₂O(l)
H₂SO₄(aq) + CuCO₃(s) → CuSO₄(aq) + H₂O(l) + CO₂(g)

A. False
Both CuO and CuCO₃ are insoluble in water. They are bases, but not alkalis.

B. False
CuSO₄ is soluble in water, and thus no precipitate is formed.

C. False
Both reactions are not redox, because there is no change in oxidation number.

D. True
In each reaction, water is formed.

...... The answer is: D. Water is a product.