Answer to Question #131670 in Physical Chemistry for Zain Abbas

Question

When 1 mole of Zn metal is added to 2M HCl solution at 25 °C and 100 kPa pressure, the metal dissolves and hydrogen gas is evolved. At the same time, 152.3 kJ of heat energy are released. a. Calculate ∆V for the reaction

Answer 1

When 1 mole of Zn metal is added to 2M HCl solution .

Then 1 mol of H₂ gas is formed due to this gas work done prformed .

energy = 152.3 * 1000 = ( 100 * 1000) * delta V .

delta V = 152300 / 100000 = 1.523 .