Oxygen Oxidizes Ethyne to Carbon Dioxide and Water as Shown by the Equation: 2c2h2 + 5o2 → 4co2 + 2h2o What is a Volume of Ethyne Gas at Stp Required to Produce 8.4 Dm3 of Carbon Dioxide at Stp? [H = 1, C = 12, O = 16] - Chemistry

Oxygen oxidizes ethyne to carbon dioxide and water as shown by the equation:

2C2H2 + 5O2 → 4CO2 + 2H2O

What is a volume of ethyne gas at STP required to produce 8.4 dm3 of carbon dioxide at STP? [H = 1, C = 12, O = 16]

Solution

2C_2H_2 + 5O_2 -> 4CCO_2 + 2H_2O

2 moles of C_2H_2 =  4 moles of CO_2

xdm^3 of C_2H_2 = 8.4 dm^3 of CO_2

x = (2xx8.4)/4 = 4.2 dm^3 of C_2H_2

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