I don't know if $\ce{C}$ or $\ce{CuO}$ react with $\ce{H2SO4}$. Some sources say that: $$\ce{C + H2SO4 -> CO2 ^ + 2SO2 ^ + 2 H2O}$$ (It seems to be similar to $\ce{Cu}$ reactions with $\ce{H2SO4}$). Is the reaction possible? If the answer is yes, in what conditions does the reaction take place?
And I was pretty sure that $\ce{CuO + H2SO4 -> CuSO4 v + H2O}$
But my chemistry book says that none of the reactions is possible. I'm little bit confused, some help would be apreciated.
Carbon reacts with sulfuric acid to produce carbon dioxide and sulfur dioxide gas along with water. Sulfuric acid should be a concentrated, heated solution.
$$\ce{C + 2H2SO4 ->[\Delta] CO2 + 2SO2 + 2H2O}$$
More insight about this reaction can be found here.
Copper(II) oxide, a black solid, and dilute sulfuric acid react to produce copper(II) sulfate, giving a characteristic blue colour to the solution. From this solution, blue copper(II) sulfate pentahydrate crystals may be obtained if desired.
$$\ce{CuO + H2SO4⟶CuSO4↓+H2O}$$
It is a general "insoluble metal oxide is reacted with a dilute acid to form a soluble salt" type of reaction. It is a standard class experiment.
More insight about this reaction can be found here.
