Question

. One mole of a sugar, (CH2O)6, is burned. Which volume of oxygen, measured at room temperature and pressure, is required for complete combustion of the sugar

Answer 1

Answer:

moles =mass/RFM

Explanation:

add the (12+2+16)6

=60

1=m/60

hint 1mol=21000cm^3

=21000cm^3

for it is just one mole consumed in combustion

Answer 2

Explanation:

One mole of a sugar, (CH2O)6, is burned. Which volume of oxygen, measured at room temperature and pressure, is required for complete combustion of the sugar

1 mole of any gas will be 24$dm^{3}$ at room temperature.

Ratio of C2H6 : CH4 : Total Gas = 1 : 1 : 2 = 2 : 2 : 4

For a complete reaction to occur,

Ratio of C2H6 : O2 = 2 : 7

Ratio of CH4 : O2 = 1 : 2 = 2 : 4

Overall ratio

C2H6 : CH4 : Total Gas : O2 = 2 : 2 : 4 : 4+7 = 2 : 2 : 4 : 11

There is 200cm3 of gas mixture.

Total Gas : O2 = 4 : 11 = 200 : 550

Therefore, 550$cm^{3}$ of oxygen is needed.