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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 + 5O→ 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

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

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

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