What mass of limestone do I need to neutralize a lake with pH 5.6 and a volume of #4.2 × 10# L?
You need 530 kg of limestone to neutralize the lake.
Step 1. Calculate the concentration of H⁺
Step 2. Calculate the moles of H⁺
Step 3. Calculate the mass of CaCO₃
CaCO₃ + 2H⁺ → Ca²⁺ + H₂O + CO₂
Mass of CaCO₃ =