Octane (C8H18) is a component of gasoline that burns according to the following equation: C8H18(l)+252O2(g)→8CO2(g)+9H2O(g) ΔH∘rxn=−5074.1kJ...
Octane (C8H18) is a component of gasoline that burns according
to the following equation:
C8H18(l)+252O2(g)→8CO2(g)+9H2O(g)
ΔH∘rxn=−5074.1kJ
What mass of octane (in g ) is required to produce 1850 kJ of heat?
Homework Answers
from reaction,
1 mol of octane produces 5074.1 KJ
So,
to produce 1850 KJ, mol of octane required = 1850/5074.1
= 0.3646 mol
Molar mass of C8H18 = 8*MM(C) + 18*MM(H)
= 8*12.01 + 18*1.008
= 114.224 g/mol
we have below equation to be used:
mass of C8H18,
m = number of mol * molar mass
= 0.3646 mol * 114.224 g/mol
= 41.7 g
Answer: 41.7 g
Feel free to comment below if you have any doubts or if this answer do not work
Add Answer to:
Octane (C8H18) is a component of gasoline that burns according
to the following equation:
C8H18(l)+252O2(g)→8CO2(g)+9H2O(g)
ΔH∘rxn=−5074.1kJ...
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