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  4. How many grams of CO2 will be produced by the complete combustion of 2 moles, of ethanol?

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Q. How many grams of $ C{{O}_{2}} $ will be produced by the complete combustion of 2 moles, of ethanol?

MGIMS WardhaMGIMS Wardha 2009

Solution:

$ \underset{\begin{smallmatrix} 1\text{ }mole \\ =46g \end{smallmatrix}}{\mathop{{{C}_{2}}{{H}_{5}}OH}}\,+3{{O}_{2}}\xrightarrow{{}}\underset{\begin{smallmatrix} 2\text{ }moles \\ 88g \end{smallmatrix}}{\mathop{2C{{O}_{2}}}}\,+3{{H}_{2}}O $ 1 mole (46 g) $ {{C}_{2}}{{H}_{5}}OH $ gives $ =88\text{ }g\text{ }C{{O}_{2}} $ 2 moles (92 g) $ {{C}_{2}}{{H}_{5}}OH $ will give $ =176\text{ }g\text{ }C{{O}_{2}} $