Given the equation, c2h4 (g + 3o2 (g? 2co2 (g + 2h2o (l + 1411 kj, how much heat is released when 8.00 g of o2 react?

Question

Chemistry

Brooklyn Gibson

2 March, 11:06

Given the equation, c2h4 (g + 3o2 (g? 2co2 (g + 2h2o (l + 1411 kj, how much heat is released when 8.00 g of o2 react?

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Answers (1)

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Ariel Huerta · Answer 1

Answer is: 117.58 kJ of heat is released when oxygen react.

Chemical reaction: C₂H₄ + 3O₂ → 2CO₂ + 2H₂O; ΔH = + 1411 kJ.

m (O₂) = 8.00 g.

n (O₂) = m (O₂) : M (O₂).

n (O₂) = 8 g : 32 g/mol.

n (O₂) = 0.25 mol.

Make proportion: 3mol (O₂) : 1411 kJ = 0.25 mol : Q.

Q = 1411 kJ · 0.25 mol : 3 mol.

Q = 117.58 kJ.