Question

The gaseous hydrogen acetylene, C₂H₂ used in welder’s torches, releases 1300 KJ, when 1 mole of C₂H₂ undergoes combustion, then which of the following is not true? 

1) combustion of acetylene is an exothermic reaction 

2) the balanced chemical reaction of combustion of acetylene is C₂ H₂ + 5O₂ → 2CO₂ + H₂O

3) 2 moles of water produced when 2 moles of acetylene reacts 

4) 44 g of CO₂ produced, when 13 g of acetylene reacts

Answer 1

2) the balanced chemical reaction of combustion of acetylene is C₂ H₂ + 5O₂ → 2CO₂ + H₂O

2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O is a balanced chemical reaction.