Balanced chemical equation is:
CH4(g) + 2 O2(g) -> CO2(g) + 2 H2O(g)
Molar mass of CH4,
MM = 1*MM(C) + 4*MM(H)
= 1*12.01 + 4*1.008
= 16.042 g/mol
mass(CH4)= 1.12 g
use:
number of mol of CH4,
n = mass of CH4/molar mass of CH4
=(1.12 g)/(16.04 g/mol)
= 6.982*10^-2 mol
Molar mass of O2 = 32 g/mol
mass(O2)= 1.7 g
use:
number of mol of O2,
n = mass of O2/molar mass of O2
=(1.7 g)/(32 g/mol)
= 5.312*10^-2 mol
1 mol of CH4 reacts with 2 mol of O2
for 6.982*10^-2 mol of CH4, 0.1396 mol of O2 is required
But we have 5.312*10^-2 mol of O2
so, O2 is limiting reagent
we will use O2 in further calculation
Molar mass of CO2,
MM = 1*MM(C) + 2*MM(O)
= 1*12.01 + 2*16.0
= 44.01 g/mol
According to balanced equation
mol of CO2 formed = (1/2)* moles of O2
= (1/2)*5.312*10^-2
= 2.656*10^-2 mol
use:
mass of CO2 = number of mol * molar mass
= 2.656*10^-2*44.01
= 1.169 g
Answer: 1.2 g
help with my study guide please us He will react with gaseous oxygen (O2) to produce...
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