pling Learning cmillan learning When methanol, CH30H, is burned in the presence

Question

pling Learning cmillan learning When methanol, CH30H, is burned in the presence of oxygen gas, O2, a large amount of heat energy is released, as shown in the combustion reaction below. CH,OH(g) +solg) CO2(g) +2H2O(1) H=-764 kJ Based on the balanced thermochemical reaction above, how much heat is produced when 41.1 g of methanol react with 63.8 g of oxygen? Number kJ of heat produced Which reactant, methanol or oxygen, is limiting? O oxygen O methanol O Previous Give Up & View Solution Check Answer Next el

Explanation / Answer

CH3OH + 3/2 O2   ------------> CO2 + 2 H2O

32.04 g       48 g                         

41.1            63.8 g

here limiting reagent is CH3OH. so heat produced is based on that.

32.04 g CH3OH    ----------------> 764 kJ

41.1 g CH3OH    ---------------> ??

amount of heat = 41.1 x 764 / 32.04 = 980

heat produced = 980 kJ

methanol is limiting reagent

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