One way to raise the pH of an acidic lake (and restore aquatic life) is to add limestone (CaCO3).

Question

How many grams of CaCO3 are needed to neutralize 1.2kL of the acidic water from the lake if the acid is sulfuric acid?
H2SO4(aq)+CaCO3(s)→CO2(g)+H2O(l)+CaSO4(aq)

Answer 1

pH = ? or (H2SO4) = ?

Answer 2

pH=6.5

Answer 3

pH = 6.5 = -log(H^+). Solve for (H^+).
Convert to M H2SO4.
Then mols acid = (H2SO4) x L = ?
Using the coefficients in the balanced equation, convert mols H2SO4 to mols CaCO3, then convert to grams CaCO3.