The reaction of carbon dioxide(g) with hydrogen(g) to form acetylene(g) (c2h2) and water(g) proceeds as follows: 2 co2(g) + 5 h2(g) c2h2(g) + 4 h2o(g) when 11.1 grams of co2(g) react with sufficient h2(g) , 5.86 kj of energy are absorbed . what is the value of h for the chemical equation given? δhrxn = kj

46.5 kJ

Explanation:

The balanced chemical reaction is:

given mass = 11.1 g

Molar mass = 44.01 g/mol

0.252 moles of carbon dioxide react with sufficient hydrogen, energy released = 5.86 kJ

2 moles of carbon dioxide react with sufficient hydrogen, energy released =

Thus value of ΔHrxn for the chemical equation given is 46.5 kJ

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