Interpretation:
The mass of glucose in grams should be calculated which can be oxidised completely by 2.0 L of oxygen gas at STP during
Concept introduction:
A set of
The
Answer to Problem 87A
Mass of glucose in grams = 2.7 g.
Explanation of Solution
Volume = 2.0 L
The chemical reaction for the cellular respiration process is:
According to the above reaction, one mole of glucose reacts with six moles of oxygen to form six moles of carbon dioxide and six moles of water.
Since, at STP:
One mole of any gas occupies volume 22.4 L.
Thus, number of moles of oxygen =
=
According to the reaction, the ratio between glucose and oxygen is 1:6.
Thus, number of moles of glucose =
=
Molar mass of glucose = 180.16 g/mole
Number of moles =
Put the values,
Mass of glucose =
= 2.7 g
Thus, mass of glucose in grams = 2.7 g
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