Equal volumes of one molar hydrochloric acid and one molar sulphuric acid are neutralized completely — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

Hydrochloric acid ($HCl$) is a monobasic strong acid, releasing 1 mole of H+ per mole of acid. Sulphuric acid ($H_2SO_4$) is a dibasic strong acid, releasing 2 moles of H+ per mole of acid. Since equal volumes and equal molarities are neutralized, $H_2SO_4$ provides twice the moles of H+ compared to $HCl$, resulting in twice the heat of neutralization. Therefore, Y = 2X.