How do you prepare 0.5 N sulphuric acid?

To prepare 0.5 N sulfuric acid, you can mix 49 g of sulfuric acid (H2SO4) into enough water to make 1 liter of solution. This will give you a solution that has a concentration of 0.5 N, meaning it contains 0.5 moles of H2SO4 per liter of solution. Remember to always add acid to water slowly while stirring to avoid splashing and to ensure a safe preparation process.