Determine the mass of oxygen necessary to react with 2.3 moles of HCl

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16-03-2017
Chemistry

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Determine the mass of oxygen necessary to react with 2.3 moles of HCl

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JoshEast JoshEast · Answer 1 · 2017-03-16T18:16:56+01:00

JoshEast JoshEast

16-03-2017

balanced equation: 4HCl + O₂ → 2Cl₂ + 2H₂O

mole ratio of HCl : O₂ is 4 : 1

∴ if moles of HCl = 2.3 mol

then mol of O₂ = 2.3 mol ÷ 4
= 0.575 mol

mass of O₂ = moles of O₂ × molar mass of O₂
= 0.575 mol × (16 × 2) g/mol
= 18.4 g

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