Question

2-Methylpropan-1-ol can also be converted to produce diesel and jet fuel. The first step in the process is the production of 2-methylpropene.
C4 H10O(l) → C4 H8(g) + H2 O(g) 2-methylpropan-1-ol 2-methylpropene Using the data below, calculate the enthalpy change, in kJ mol-1, for the production of 2-methylpropene from 2-methylpropan-1-ol.

4C(s) + 5H2(g) + ½O2(g) → C4 H10O(l)
ΔH = -335 kJ mol-1

4C(s) + 4H2(g) → C4 H8(g)
ΔH = -17 kJ mol-1

H2(g) + ½O2(g) → H2 O(g)
ΔH = -242 kJ mol-1​