Question

A biochemistry lab technician decides to measure the carbon dioxide that is produced when glucose is broken down. he plans to burn 100.0 grams of glucose(c6h12o6)in the presence of excess oxygen. help him calculate the mass of the carbon dioxide that he hopes to produce in the reaction.

Answer 1

When 100.0 g of glucose is burned in the presence of excess oxygen, 146.6 g of CO₂ are produced.

We want to calculate the mass of carbon dioxide produced in the combustion of 100.0 g of glucose.

What is combustion?

Combustion is a high-temperature exothermic redox chemical reaction between a fuel and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke.

• Step 1: Write the balanced equation.

C₆H₁₂O₆ + 6 O₂ ⇒ 6 CO₂ + 6 H₂O

• Step 2: Calculate the mass of CO₂ produced upon the combustion of 100.0 g of C₆H₁₂O₆.

According to the balanced equation, the mass ratio of C₆H₁₂O₆ to CO₂ is 180.16:264.06.

100.0 g C₆H₁₂O₆ × 264.06 g CO₂/180.16 g C₆H₁₂O₆ = 146.6 g CO₂

When 100.0 g of glucose is burned in the presence of excess oxygen, 146.6 g of CO₂ are produced.

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