# Question #d2ef3

##### 1 Answer
Oct 31, 2014

1440 kJ of heat is evolved.

${C}_{6} {H}_{12} {O}_{6} \left(s\right) + 6 {O}_{2} \left(g\right) \rightarrow 6 C {O}_{2} \left(g\right) + 6 {H}_{2} {O}_{\left(l\right)}$

$\Delta H = - 2806 k J . m o {l}^{- 1}$

I will assume the glucose is INXS so:

6 mol ${O}_{2}$ produce 2806 kJ

${M}_{r}$ of ${O}_{2}$ = 16 +16 = 32

So 1 mol ${O}_{2}$ weighs 32g

So 6 x 32 = 192g ${O}_{2}$ produces 2806 kJ.

So 1g ${O}_{2}$ produces 2806/192 = 14.6 kJ

So 98.6g ${O}_{2}$ produces 14.6 x 98.6 = 1440 kJ