Question

the difference between ∆H and ∆U for the combustion of toluene C7H8 at 300K​

Answer 1

Explanation:

ANSWER

Combustion of benzene:

C

6

H

6

(l)+

2

15

O

2

(g)⟶6CO

2

(g)+3H

2

O(l)

ΔH=ΔU+PΔV; Δn=6−

2

15

=−1.5

ΔH−ΔU=PΔV

ΔH−ΔU=ΔnRT

ΔH−ΔU=−1.5×R×(127+273)

ΔH−ΔU=−600R .