Question

Glucose is a good source of food energy. When it reacts with oxygen, carbon dioxide and water are formed. How many liters of COke are produced when 126 g of glucose completely react with oxygen?

Answer 1

94.1 L

Step-by-step explanation:

The number of liters produced when 126g of glucose is completely reacted with O2 is calculated as follows

find the moles of C6H12O6 used that is moles = mass /molar mass

= 126g /180 g/mol = 0.7 moles

from the equation

C6H12O6 +6O2 = 6CO2 +6 H2O

the reacting ratio of C6H12O6 to Co2 is 1:6 therefore the moles of CO2 = 0.7 x6/1= 4.2 moles

At STP 1 moles of a gas = 22.4 L

what about 4.2 L = how many liters

cross multipication

= (4.2moles x 22 .4 L)/ 1mole = 94.1 L