balance reaction
Preparation of Ethane by Dehydration of Ethanol.
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Ethanol can be dehydrated to give ethene by heating it with an excess of concentrated sulphuric acid at about 170°C. Concentrated phosphoric(V) acid, H3PO4, can be used instead. The acids aren't written into the equation because they serve as catalysts.
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Ethanol is heated at 443 k in presence of excess of concentrated sulphuric acid to obtain ethene. This reaction can be given by following equation:
CH3CH2OHconc H2SO4CH2=CH2+H2O
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