Question

one type of anaerobic respiration converts glucose to ethanol and carbon dioxide. if the molecular weight of glucose is 180g/mol and the molecular mass of ethanol is 50g/mol. how many grams of carbon dioxide are produced when 1mol of glucose is digested

Answer 1

Answer on Question #70884 - Chemistry - Other

Question:

one type of anaerobic respiration converts glucose to ethanol and carbon dioxide. if the molecular weight of glucose is 180g/mol and the molecular mass of ethanol is 50g/mol. how many grams of carbon dioxide are produced when 1mol of glucose is digested

Solution:

Let's write the reaction equation:

$$C _ {6} H _ {1 2} O _ {6} \rightarrow 2 C O _ {2} + 2 C _ {2} H _ {5} O H.$$

As one can see, 1 mole of glucose is needed to produce 2 moles of carbon dioxide:

$$\frac {n (C _ {6} H _ {1 2} O _ {6})}{1} = \frac {n (C O _ {2})}{2}; n (C O _ {2}) = 2 \cdot n (C _ {6} H _ {1 2} O _ {6}).$$

The mass of carbon dioxide is the product of the number of the moles and molar mass:

$$m (C O _ {2}) = n (C O _ {2}) \cdot M (C O _ {2}) = 2 (m o l) \cdot 4 4. 0 1 (g m o l ^ {- 1}) = 8 8 g$$

Answer: 88 g

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