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Potassium permanganate (a disinfectant) and glycerin (a lubricant) react explosively according to the following equation. 14KMnO4 + 4C3H5(OH)3 7K2CO3 + 7Mn2O3 + 5CO2 + 16H2O How many moles of KMnO4 are consumed to form 0.886 moles of carbon dioxide?

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Answer is: 2.48 moles potassium permanganate  are consumed.

Balanced chemical reaction:  
14KMnO₄ + 4C₃H₅(OH)₃ → 7K₂CO₃ + 7Mn₂O₃ + 5CO₂ + 16H₂O.
n(CO₂) = 0.886 mol.
From chemical reaction: n(CO₂) : n(KMnO₄) = 5 : 14.
n(KMnO₄) = n(CO₂) · 14 ÷ 5.
n(KMnO₄) = 0.866 mol · 14 ÷ 5.
n(KMnO₄) =2.48 mol; amount of substance.
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and the other one is 0.709


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