How many moles of C2H2 are needed to react completely with 84 mol O2

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03-07-2018
Chemistry

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How many moles of C2H2 are needed to react completely with 84 mol O2

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Willchemistry Willchemistry · Answer 1 · 2018-07-03T21:31:03+02:00

Willchemistry Willchemistry

03-07-2018

Balanced chemical equation:

2 C2H2 + 5 O2 = 4 CO2 + 2 H2O

2 moles C2H2 ---------------- 5 moles O2
moles C2H2 ------------------ 84 moles O2

moles C2H2 = 84 * 2 / 5

molesC2H2 = 168 / 5 => 33.6 moles of C2H2

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