Ethyne gas may react with hydrogen gas to form ethane gas in

Last updated: 7/31/2022

Ethyne gas may react with hydrogen gas to form ethane gas in the following reaction: C₂H₂(g) + 2 H₂(g) → C₂H6(g) Predict the standard enthalpy change for the reaction of 200 g of ethyne, using the following information. After using Hess' law, refer back to Sample Problem 11.2 on page 491. (1) C₂H₂(g) + 5/2O₂(g) → 2 CO₂(g) + H₂O(l) Δ1H=-1299 kJ Δ₂H = -286 kJ (2) H₂(g) + 1/2O₂(g) → H₂O(l) (3) C₂H6(g) + 7/2 O₂(g) → 2 CO₂(g) + 3 H₂O(l) Δ1H=-1560 kJ